"If the president of Lyon did say he was interested in Nicolas without speaking to us, then he is out of order," said Allardyce.
"We have had no contact with anyone about Nicolas. Even if we did, the answer would be no."
"Transfer windows worry me, especially if it is a big football club who is being linked with my player," he said.
"It is a great difficulty for me because it could end up leading to a fall out with a player who is doing well for us at that particular moment in time.
"But speculation is bound to surface more and more at this time or year and there is very little we can do about it."
"Nicolas' overall contribution has been very good but because we are not winning matches people are bound to make more of the fact he has not scored," he said.
"It would be a fantastic game for Nicolas to score his first Premiership goal for us against Arsenal," he said.
"But if he gets one it has to be the winner, otherwise it does not mean anything."