Brendan Rodgers has confirmed Matt O'Riley is completing his Brighton medical.
The Parkhead boss has admitted the midfielder will complete a move to the Premier League in the coming days.
O'Riley is not part of the Celtic squad for the fixture against St Mirren with a record-breaking transfer switch to Brighton all but finalised.
"He'll be down in Brighton completing his medical," said Rodgers of O'Riley's absence in Paisley when speaking to BBC Sportsound ahead of kick-off.
"That move should be done over the course of the next couple of days.
Read more:
-
Rodgers names Celtic line-up to face St Mirren as O'Riley left out
-
Brighton boss probed on Matt O’Riley transfer after Man United victory
"He has been absolutely magnificent in this last year. He gave everything to the team and the club.
"Right up to his very last day he was out doing extra work. That shows the mentality he has.
"So, I'm pleased for Matt in terms that he gets a move to the Premier League - and for us, we push on. That's the model of the club."