Messi is largely considered to be the greatest player in Barcelona's history and has allegedly agreed to extend his contract at Camp Nou, but it appears that the Argentine has not been impressed with the club's dealings in the transfer market.
According to Diario Gol, the sale of Neymar to Paris Saint-Germain and the failure to sign either Liverpool's Philippe Coutinho or compatriot Angel di Maria from PSG has led to 30-year-old considering a switch to another club.
It has been claimed that Messi would like assurances over Barcelona's direction in the transfer market before committing his future to the La Liga outfit, where he has played his football since 2001.
Ousmane Dembele has been brought in from Borussia Dortmund, but it has been suggested that the £96.8m signing of the French international has not been enough to satisfy the playmaker.
Messi has netted twice this season, with Barcelona sitting in second place in the La Liga table after two matches.