Milan: Mauro Icardi’s stoppage-time header gave Inter Milan a 1-0 win over AC Milan in the city derby on Sunday but they could be left counting the cost of that victory after key midfielder Radja Nainggolan limped off in the first half.

Nainggolan hurt his ankle in a crunching tackle with Lucas Biglia. The Belgian midfielder will undergo tests but is now a doubt for Wednesday’s Champions League match at Barcelona.

Forward Ivan Perisic went off in the second half, while midfielder Marcelo Brozovic could also miss the trip to Barcelona, with both players having right thigh injuries.

“I’m not worried because I have an important squad,” Inter coach Luciano Spalletti said. “It will be difficult for them to recover though.

“I will change some players for the Barcelona match because everyone has to feel involved in our journey, otherwise we can’t reach our aims.”