World player of the year Kaka is a doubt for Brazil's friendly with Sweden in London next week.

The Brazilian pulled up with a thigh problem early on in Milan's 2-1 home defeat by Sampdoria in Serie A on Wednesday.

"Kaka won't be with us at Torino [on Saturday] and I don't think he'll go to his national team either," Milan coach Carlo Ancelotti told La Gazzetta dello Sport.

The playmaker had recovered from a back problem he suffered in last weekend's 2-1 defeat at Roma to start for the European champions on Wednesday.

Sweden are preparing for this summer's Euro 2008 with the game at the Emirates.

Reuters