Mendes was said to have contributed 20% of the £3.75 million Porto paid Anderson's previous club, Gremio, to sign the midfielder in 2006.
On 7 June 2010 Palermo announced they had signed the midfielder in a 5-year contract from Bellinzona.
The Wigan boss, Paul Jewell expressed delight on signing the talented midfielder.
On 18 June 2010 Cagliari signed the offensive midfielder from Modena on a two years contract.
On 8 January 2010, Sivasspor signed the Tunisian midfielder for the second half of the Turkish season.
On 3 June 2009 Cruzeiro have signed the midfielder from French club Toulouse.
In January 2005, Beitar Jerusalem signed the midfielder for the remainder of the 2004-05 season.
He had been on trial with Derby; Burnley tried to offer him a contract before West Ham signed the midfielder.
In March, Vale made Palace an offer, in order to sign the young midfielder permanently in the summer.