AC Milan defender Pierre Kalulu will undergo medical tests later this week ahead of Saturday’s derby clash with Inter Milan.

This according to Italian broadcaster Sky Sport Italia, via FCInterNews, who report that the Frenchman is a major doubt for the match against the Nerazzurri after having suffered a muscle injury during training a couple days ago.

Milan coach Stefano Pioli could be looking at a crisis in defense for the upcoming derby.

Firstly, there is the fact that defender Fiyako Tomori will definitely miss the match.

There is no doubt about the Englishman not being able to play. He will be serving a one-match suspension after getting sent off for a second yellow card during the Rossoneri’s win over Roma in their final match of the international break.

And there’s more bad news for Milan and Pioli, in the form of a potential absence for Kalulu.

Pierre Kalulu To Undergo Medical Tests Thursday Or Friday Ahead Of Milan Derby Clash

According to Sky, Kalulu is currently out with the muscle injury that he picked up in training.

It’s not necessarily a major problem. However, the clock is ticking if the 23-year-old is to be fit in time for the derby, which is now just a few days away.

Sky report that the medical tests on Kalulu’s injury will be later this week.

The Frenchman will either undergo tests on Thursday or Friday.

These tests should reveal whether or not Kalulu will be able to play in the derby, or whether he will miss the match altogether.

If Kalulu is out, then Pioli’s options will be looking rather thin in terms of defense. This is true both in terms of the starting eleven and also the bench.

It’s virtually certain that former Schalke defender Malick Thiaw will start in central defense for the Rossoneri.

And if Kalulu is out, it should be Simon Kjaer who partners Thiaw.