Derby County striker Martyn Waghorn has

/B0RE9BqAKGg/?utm_source=ig_web_copy_link">taken a dig at teammate Richard Keogh when sharing his latest update from the club's pre-season preparations.

The Rams have had a turbulent summer since their Championship play-off final defeat to Aston Villa, with Phillip Cocu replacing Frank Lampard as the club's manager following the latter's switch to Chelsea.

But Derby did manage to appoint Cocu swiftly following Lampard's departure, which means he has been granted plenty of time to work with his squad before the season starts next month.

Graeme Shinnie and Kieran Dowell have been the club's two incomings so far this window, but it was two of last season's main men who were the focus of attention in the latest training ground shots.

Waghorn shared an image of him winning a footrace against his Derby teammates, and he also took the opportunity to point out Keogh lagging behind him in the photo:

The verdict

This update provides an insight into the atmosphere within the Derby squad during pre-season preparations, and it appears there is a positive feeling despite the upheaval following last season's disappointment.

It would have come as a blow for Derby to suffer defeat in the play-off final and then lose Lampard soon after, but social media posts such as this suggest the Rams squad are starting on a clean slate for next season.

Waghorn and Keogh will be two of the club's most senior figures next season, and they must lead by example as the Rams target another promotion push.

I think the Rams did well to act swiftly following Lampard's exit, and this sort of move shows that the club is in good hands with chairman Mel Morris at the helm. Derby fans have every reason to feel optimistic for the season ahead with an experienced and forward-thinking manager such as Cocu at the helm.