Summer signing Moussa Dembele’s first goal for Celtic was crucial, earning victory against Astana and a place in the Champions League play-off round.
Can has two years remaining on his current Liverpool deal.
Celtic progressed to the next round of the Champions League on Wednesday evening.
The Nigerian international was in sensational goalscoring form against Barcelona in Stockholm.
The Benin striker has been earmarked as a potential recruit by the Cottagers.
The Magpies are looking to make a return to the Premier League next season.
Ross McCormack is set to sign for Aston Villa soon.
The former West Ham star is however a fan of the Italian defender.
The striker completed a move from Fulham on Thursday.
Sunderland have been inactive in the transfer window, but have a host of youngsters who could impress in the Premier League.