PORTIMAO, Portugal: Manchester City's reported offer of more than 100 million euros ($131 million) for AC Milan's Kaka is 'mad' and shows soccer needs a salary cap, Queens Park Rangers co-owner Flavio Briatore said on Monday.

The Italian, whose associates at English Championship (second division) club QPR include billionaires Bernie Ecclestone and Lakshmi Mittal, slammed the transfer bid at the launch of his Renault F1 team's new car.

"If you had put (Ferrari's retired seven-time world champion Michael) Schumacher in a Minardi, it would have gone nowhere," he said. "If you put Kaka in this club, it is going nowhere anyway.