Bosingwa endured relegation from the English Premiership with QPR last season and also courted controversy after refusing to be a substitute mid-season.
Bosingwa, who joined QPR in pre-season on a contract reportedly worth
QPR manager Mark Hughes signed former Chelsea defender Jose Bosingwa on a free transfer on Friday.
Portugal travel to Poland on Monday with their morale at a low ebb and few at home believing they are capable of progressing from the so-called "Group of Death" at Euro 2012.
Chelsea captain John Terry has dismissed claims he directed a racial slur at Queens Park Rangers defender Anton Ferdinand during a Premier League, insisting Sunday "it was all a misunderstanding."
Chelsea came from behind to beat West Bromwich Albion 2-1 in the Premier League on Saturday, giving Andre Villas-Boas his first win as manager.