Kelechi Iheanacho has admitted he will "forever be grateful" for his time at Celtic.
The former Parkhead striker has shared a parting message on social media after his summer exit.
The 29-year-old had spent the season in Glasgow last term, winning a Scottish Premiership and Scottish Cup double at Celtic.
On Instagram, the striker posted: "To The Celtic FC - What we achieved last season was truly incredible, I’ll forever be grateful for the opportunity to represent your great football club.
"My thanks to Brendan Rodgers for bringing me to the football club.
"Thank you to Martin O’Neill and he’s staff, special thanks to my teammates will miss you guys 😭
"To the amazing fans, thank you for your unwavering support. I wish you all the very best for the upcoming season and beyond! Love, Kelechi 💚🍀"
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Iheanacho was thought to be wanted for an extended stay in Glasgow but has since signed for Turkish side Bursaspor.
Celtic had an option to extend his contract but it was not triggered with the striker then leaving the club.
Asked why the contract extension was not triggered, Martin O'Neill said: "Well, I think the option ran out, that's fine, but the option would be to take someone I assume on similar terms as before, so that I think is probably the difference really.
"I thought he did terrifically well for us as a real impact player coming on. In my two spells here, he actually started one game for us, which was the game against Dundee United, but he was definitely where I would have thought it would be nice to have had him for pre-season, so that you maybe can garner a lot of fitness for him.
"But he's chosen to go elsewhere, that's fine, you'd have to ask him."
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