Kieftenbeld’s current deal at The Den is set to expire this summer and thus he will become a free-agent if fresh terms cannot be agreed.
Since joining Millwall on a permanent deal from Birmingham City in January 2021, the midfielder has made 40 appearances for the club in all competitions.
During the 2021/22 campaign, Kieftenbeld featured on 27 occasions for the Lions in the second-tier.
Millwall ended the season six points adrift of the play-off places and will be keen to close this particular gap by making some additions to their current squad in the transfer window which is set to open next month.
Whereas Rowett will already be looking at ways to improve his team, he will also need to make decisions regarding the futures of some of the existing members of his squad.
Making reference to Kieftenbeld’s current situation at Millwall, Rowett has admitted that he wants the midfielder to stay at the club.
Speaking to the South London Press, Rowett said: “I’d like to keep Maikel.
“He is a player that I trust and a player I’ve worked with for quite a while now.
“What you need is a little bit of know-how in the squad.
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“There are players who can do certain things that you want on the pitch and he is a great trainer, a great professional around the place.
“In my opinion, you don’t want to lose players like that but, again, I’ll let the club pick that up and see where it goes.
“My intention is that I’d like to keep Maikel at the club.”
Given that Rowett clearly wants Kieftenbeld to stay, it wouldn’t be at all surprising if the midfielder signs a new deal in the not-too-distant future.
As a result of a lack of consistency, the midfielder only managed to record a WhoScored match rating of 6.42 at this level which is an underwhelming figure.
If he does go on to feature for Millwall again next season, Kieftenbeld will have to make improvements to his game in order to help his side move forward as a club.