 In summer 2002 the cause of his hamstring injury was discovered , and he underwent an operation to relieve a blockage in the arteries of his right leg which had been severely restricting circulation . During his recovery he appeared as a pundit for ITV 's coverage of the 2002 FIFA World Cup . Ranieri initiated a squad rotation system for the 2002 – 03 season , but focused the team around Gianfranco Zola , which limited Hasselbaink 's playing time . Barcelona manager Louis van Gaal agreed an £ 8 million transfer for Hasselbaink in the January transfer window after months of negotiations but was sacked before the transfer went through and the deal subsequently collapsed . Though the attack was focused on Zola throughout the season Hasselbaink managed to score 15 goals in 44 games , only one goal less than Zola . 
