Giorgos Giakoumakis has reportedly switched agents as he eyes a move to the Premier League.
Reports in recent weeks have suggested the Greek forward could leave Parkhead in the summer.
It was claimed that contract talks with Giakoumakis had stalled after a long period of discussing a fresh contract.
And now, Greek outlet Sportime state Giakoumakis is seeking a life-changing move to the Premier League from Celtic after changing his representatives.
It's reported Giakoumakis ended his six-to-seven-year relationship with Emmanouilidis-Pathiakakis and signed with BHM Sports Agency. The agency already represents Celtic team-mate Carl Starfelt.
The striker, who is still under contract until 2026, is said to be seeking a new challenge with "the victories of Celtic are...routine and without the appropriate local competition except for Rangers."
Sportime go on to claim it would take a fee of between €6 and €7million for Celtic to sell the striker in the transfer window next month.
Giakoumakis has played 21 times for Celtic so far this season in all competitions. He's scored eight goals so far this season and assisted one goal this term.
Last season, Giakoumakis netted 17 times for Celtic across the Scottish Premiership and Scottish League Cup.
Quizzed on the reports that Giakoumakis could move on, Ange Postecoglou said: "I don't have those kinds of discussions and what I deal with is what I see every day.
"How a player trains and presents himself here, that is what I deal with. If I see there is any shift there or people are unhappy or have some issues, I'll deal with it. Right now, all I see is the players here training and committed to us as a football club. That is all that concerns me.
"Beyond that, with their contracts, they have representatives who look after them. If there are any issues, they'll come across my desk. But that is in the background. What's more important to me is what I see every day. If I am happy with it, all good, if not I'll deal with it then."
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