CELTIC forward Timo Weah has left the club ahead of this weekend's Old Firm derby.

Weah, who was on loan at Celtic Park from Paris Saint-Germain, posted on Instagram to reveal his departure from Glasgow's East End.

The American thanked the club's fans for their support during his time at the club, as he leaves to join up with the United States under-20s squad ahead of this summer's World Cup in Poland.

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To all my Celtic Fans❤️🍀 I want to say thank you all for the undying support you have given me throughout my time with Celtic. I will be joining my National team to participate in the U20 World Cup in Poland. With this decision, the gaffer told me that it is in the best interest of the team that I collect my things and go home rather than be apart of the game on Sunday so I’ll be on my way. It was a true honor playing for this club and also having the opportunity to interact with legends who paved the way for us. As a young player, I feel it’s an important step in trying to advance myself. I still have a lot of growing to do in my game and I am especially thankful to the Celtic family for giving me the opportunity to show you all what I am capable of doing once given the chance. To you the fans, I will never forget you for all the love, support and kindness you have shown me. I don’t know as yet what the future holds but I wish to one day come back to this great club to be with you all. I will forever miss you chanting my name and hearing the beautiful song you have created for me. I also want to take this time to thank my wonderful teammates for supporting me every step of the way. It was really great playing with you all and sharing some really amazing moments that I’ll never forget . Thanks so much to Celtic FC and to you the fans for accepting me. 🙏🏾God bless🙏🏾❤❤🍀🍀🍀🍀🍀🍀🍀🍀

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Addressing the Celtic fans, Weah wrote: "I want to say thank you all for the undying support you have given me throughout my time with Celtic.

"I will be joining my National team to participate in the U20 World Cup in Poland. With this decision, the gaffer told me that it is in the best interest of the team that I collect my things and go home rather than be a part of the game on Sunday so I’ll be on my way.

"It was a true honor playing for this club and also having the opportunity to interact with legends who paved the way for us."