Lionel Messi has made a transfer demand to Barcelona during contract negotiations.

Messi is demanding greater say on transfer policy as part of talks over a new deal at Barca.

And Don Balon says the Argentine has urged Barca to move for PSG midfielder Marco Verratti.

Messi is a big fan of the Italian and believes signing the midfielder would deliver a big leap in the team's quality.

Verratti, amongst Barca's football staff, is seen as a potential successor for Andres Iniesta.