The 24-year-old Celtic forward struck for the developmental squad at Sunderland.
The Celtic star took part in a Q & A with fans alongside Jason Denayer.
Celtic striker John Guidetti has admitted that he wanted to retire in 2013.
The Celtic loanee was reacting to the rejection of his appeal against a seven-match ban for racism.
A slight majority of Celtic fans have urged the club to retain Aleksandar Tonev after he lost his appeal against a ban for racial abuse.
The Bhoys midfielder is relishing his more advanced role within Ronny Deila's side.
The Celtic boss says the club are 'really working hard' to sign the Manchester City striker on a permanent basis.
Scott McDonald is expecting Millwall to face a tough test when they run into former Celtic boss Neil Lennon and his current charges at Bolton Wanderers.
Speculation is linking John Guidetti with a January move, which would break Celtic loan, but he intends to take in a Europa League clash with Inter Milan.
Tarcisio Burgnich tasted continental heartache against Celtic back in 1967, but is backing Inter Milan to exact Europa League revenge in 2015.