Manchester City are determined to sign Barcelona and Argentina forward Lionel Messi, 33, after boss Pep Guardiola agreed a new contract.

Barcelona's Argentina forward Lionel Messi, 33, has put Manchester City on alert before the January transfer window after saying he is "tired of always being the problem" at the Nou Camp.

Manchester City are ready to revive their interest in Barcelona striker Lionel Messi in January. The 33-year-old Argentine is out of contract at the end of the season so could be available for a cut-price fee.

Barcelona are considering a move for Arsenal and Germany defender Shkodran Mustafi. The 28-year-old is Barca's second option if they cannot sign Chelsea's 27-year-old Germany centre-back Antonio Rudiger.

Juventus are ready to make a move for Ajax youngster Ryan Gravenberch but they face competition from Barcelona for the signature of the 18-year-old midfielder.