Ferguson, like Chelsea, is aware of Ronaldinho's contract situation and the Spanish tax laws that will come in effect next year for the Brazilian.

The Daily Star says after missing out on Ronaldinho almost five years ago, Ferguson is seriously weighing up competing for him again should Barca indicate a willingness to sell at the end of this season.

United chief David Gill met with Ronaldinho's brother and agent, Roberto de Assis, last week to talk about the player's situation.