Lionel Messi's well-publicised frustrations at Barcelona reportedly all began with Ousmane Dembele's horror miss in the first leg of their Champions League tie against Liverpool in 2019.
Messi is known to be disillusioned with life at the Nou Camp, and sensationally attempted to leave the club this summer, but was forced to stay after a clause in his contract permitting him to depart at the end of the season was found to have expired.
His desire to win the Champions League again is known to be a big factor in his eagerness to leave, with Barcelona repeatedly disappointing in the competition over the past few seasons.
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