ABERDEEN will face a Scottish Football Association inquiry afterNeil Lennon, the Celtic captain, had a coin thrown at him during his side's 3-1victory at Pittodrie on Sunday.

The midfielder reacted to abuse from the home fans after Aiden McGeady's equaliser and moments later a coin landed close to him, which he then handed to referee Charlie Richmond.

Drew Herbertson, SFA head of disciplinary matters, said: "If the report includes the alleged coin incident, we will be writing to Aberdeen as to seek their comments before these matters go before the disciplinary committee."

Paul Lawson, the young Celtic midfielder, meanwhile, has signed an extension until the summer of 2008.

The Scotland under-21 internationalist, who has been regularly involved with the first-team squad this season, said: "I felt I've done quite well this year, obviously I've still got a way to go but the manager has shown faith in me by offering this new deal."

Gordon Strachan added: "Paul can see other young players doing well in training and reserve matches and being given a chance in the first team, and he knows he has that same opportunity."

Ross Wallace, one of Lawson's peers, was given the chance at left-back on Sunday wants to establish himself.

"I've a better chance there because there's a lot of people for the left wing place, " he said. "The gaffer sees me as a left-back so I'll get on with it.

"I thought I did pretty well. I have been playing there as well for the reserves and I seem to be doing alright."