AC Milan are worried as another injury concern hits their campaign ahead of Wednesday's Champions League last 16 second leg clash against Tottenham Hotspur.
The Italian side are short in midfield as Ghanaian player, Kevin Prince Boateng is doubtful to face former side in London.
Milan need to overturn the 1-0 home defeat in the first leg last month.
Despite impressive wins in the Serie A, Boateng's ankle problem, which forced him off in Saturday's 1-0 victory against Juventus remains a major blow to the seven-time European winners.
"We will try to have him back," coach Massimilano Allegri told reporters while chief executive Adriano Galliani said they were "worried" for the Ghanaian.
Boateng's fitness is key as midfielders Andrea Pirlo and Massimo Ambrosini are injured long-term while Mark van Bommel is ineligible and Gennaro Gattuso is banned.