Kenny Miller has been passed fit to lead Celtic's attack against Milan on Tuesday, but Gordon Strachan is sweating over the fitness of Jan Vennegoor of Hesselink, Maciej Zurawski and Craig Beattie.
Miller had an abscess removed from a wisdom tooth on Sunday and has also recovered from a head injury he picked up when colliding with a linesman against Aberdeen.
Bhoys chief Strachan is happy with the condition of Miller, but is waiting for news on his other three strikers who sat out training on Monday.
"Our three strikers didn't train this morning so that is a concern," said Strachan. "It would be more of a concern if not one of them was fit.
"Kenny had surgery yesterday in his mouth and he is fine."
A meeting with Milan is a huge occasion for Celtic, but Strachan feels his players have earned the right to take on the Italian titans.
"We deserve to be here," added Strachan on Sky Sports News. "We have had a good season so far and the players have worked extremely hard and they deserve this occasion to be playing against a top, top side."