Clarence Seedorf took a swipe at predecessor Massimiliano Allegri after AC Milan's Champions League defeat at Atletico Madrid.
Seedorf feels his players are not fit enough.
"We've said more than once that the fitness levels I found here weren't optimal, but that's normal to struggle when you have been chasing since the start of the season.
"This moment of difficulty lasted so long that it affected the team. They can react once, but after a second blow they can't get back on their feet.
"In the second half the whole team no longer produced the right level of grit and determination to keep fighting. We sat back too much and in general it was not positive."
