Millwall will be looking to have a productive summer transfer window this year as they look to put together a squad that is going to really challenge for the play-off places.

They've been close under Gary Rowett in recent seasons but the one just gone saw them chalk up far too many draws and they need to try and convert those into wins if they are to make the top six.

Rowett will be looking for players that he feels can help him do that this summer, then, whilst also bringing through some of the great youngsters that are currently at the club.

With the former point in mind, though, we've been taking a look at ten Millwall signings that unfortunately did not work out.

Indeed, they are ones that Gary Rowett will naturally want to avoid repeating...

Vasili Kulkov (right) had a pretty unforgettable time at Millwall during his spell in south London.

He'd played for the likes of Spartak Moscow and Benfica during his peak but failed to really show what he could do at the club, mustering just six appearances in the league during a loan in 1996.

He simply could not adjust to English football and made very few outings during his six-month spell at the club, before heading back to Spartak and then on to Zenit St Petersburg.

Jason Dair's time at Millwall was short-lived in the 90s with him making 24 league appearances for the club in the 18 months he was there.

He scored just the one league goal from midfield and it was clear that it was in Scotland where he was better suited to be playing, as he headed back north of the border after leaving Millwall and back to former side Raith Rovers.

Dair also played for the likes of Motherwell and Dunfermline in Scotland so he had a decent enough career but his time at Millwall just didn't work out.

Gary Taylor-Fletcher enjoyed some great moments with the likes of Blackpool as he helped them into the Premier League and he'll always be able to look back on that time with fondness.

However, his spell at Millwall wasn't as positive during a really short spell in Bermondsey.

He joined Millwall mid-way through the 2014/15 season under former Pool manager Ian Holloway but could not find the old magic under his former boss.

Indeed, he made just 10 league appearances during that time and failed to score for the Lions.

Stefan Maierhofer was a hugely imposing presence up front with him standing at 6ft 8in but that did not translate into big performances up top for Millwall, it must be said.

He had two spells with the Lions in 2014 and 2015 and made 21 league appearances across the two stints, scoring just the three league goals along the way.

Clearly, here was a player that had great attributes to be a physical nuisance for defenders but ultimately didn't have enough to really score the goals Millwall needed.

An Austrian international in the years previous, he's spent most of his career in his native land and still plays at the age of 38 for Würzburger Kickers.

Adam Bolder joined in the 08/09 season on loan from Sheffield Wednesday and did enough to keep him at the club permanently for the 2009/10 campaign.

He played pretty regularly, too, but Millwall's willingness to let him leave for Bradford City during the campaign told its own story that, ultimately, he perhaps wasn't quite at the level the Lions wanted him to be at.

He moved to Burton Albion in 2010 and then embarked on a career in non-league for the rest of his playing days from 2012 onwards, playing for the likes of North Ferriby United and Scarborough Athletic before retiring in 2019.

Uwe Fuchs spent much of his career in Germany but came over to England to play for Middlesbrough initially, where he scored an impressive nine league goals in 13 appearances.

Indeed, when Bryan Robson opted to let him go from the Teesside club, Millwall fans would have been excited about getting him in based on that record but he just couldn't quite repeat the stellar work he'd done in the north-east.

He scored just the five league goals from 36 league games for the Lions after arriving in 1995 and was heading back to Germany a year later.

Tom Elliott had a few struggles at Millwall during his three years at the club and he now finds himself playing for Salford City in Sky Bet League Two.

He arrived at the club after leaving AFC Wimbledon on a free transfer and would go on to make 57 league appearances for the Lions, though he could only muster seven league goals during that time as a striker there.

He arrived in 2017 and left in 2020 for the Ammies, with him making 21 league appearances for them in the season just gone in the fourth tier.

Rob Hulse scored goals for the likes of West Bromwich Albion, Leeds United and Derby County during his time at those respective clubs but his time at Millwall wasn't as successful right at the end of his playing career.

The forward joined on loan in 2013 from fellow London club Queens Park Rangers having spent a recent temporary spell at south London rivals Charlton Athletic.

In his eleven league appearances for the Lions, though, he failed to register a goal and soon after he would hang up his boots.

David Worrall seemed like a sound enough signing in all fairness but ultimately he could only really make appearances from the bench and as Millwall secured promotion from League One during his time at the club, he found himself down the pecking order.

He signed on a two-year deal in the summer of 2016 but was released by mutual consent just a year later with Neil Harris evidently seeing enough in that time to suggest he didn't want to take him to the Championship.

A decent player, but one that ended up being short of what Millwall needed and the Lions will obviously want to avoid repeat deals like that this summer.

Paul Wilkinson scored on his Millwall debut against Grimsby Town but could only add two more league goals to his tally in the following 34 league appearances that he made for the club - a tally he'll have naturally been disappointed with.

He was coming towards the end of his career by the time he arrived at the club and it was his time at the likes of Middlesbrough and Watford where he was perhaps best known, playing hundreds of times in the league across his spells there.

A short stay at Millwall that just didn't go as well as he might have liked.