Craig Gordon has stressed that there have been no problems with Dedryck Boyata's return to first-team training after he missed Celtic's Champions League exit last week.
The Belgium defender was sent to train with the U20s after claiming an injury led to him missing the third qualifying round defeat at AEK Athens last Tuesday night - while manager Brendan Rodgers insisted he was fit.
Boyata was back with the first team this week following a chat with Rodgers and skipper Scott Brown, although the Hoops boss stressed there is a medical issue which has led to his absence in Lithuania for the first leg of Celtic's Europa League play-off with Suduva on Thursday.
"He's been a really good player and a big part of what we've achieved over the last few seasons," Gordon told Sky Sports.
"He's come back and played quickly after injuries and done everything he could for the team and been a leader, especially among the French-speaking boys in the team.
"There's a lot of good things he's brought to the club so, from a players' point of view, there's no problem in him coming back to training.
"Dedryck has been well-liked in his entire time amongst the players so it was just a case of getting back to business and him coming back in and training the way he always has done."