MADRID (REUTERS) - Real Madrid coach Carlo Ancelotti has hit back at Gareth Bale's agent for suggesting the Wales winger's team-mates do not pass to him enough, telling Jonathan Barnett it would have been better to keep quiet.

Bale's disappointing second season in Spain hit a new low with a poor performance for the holders in last week' Champions League defeat at Juventus and he again failed to spark in Saturday's 2-2 Spanish La Liga draw at home to Valencia.

The 25-year-old has been whistled by disgruntled fans at the Bernabeu, a startling turnaround for a player who scored in the finals of the Champions League and the King's Cup last term, but has a chance to redeem himself when Real host Juve for the return leg on Wednesday.

"This is a world in which a lot of people talk and sometimes they talk too much," Ancelotti told a news conference on Tuesday.

"Bale's agent spoke (as one) who has never been to one of our training sessions, who doesn't know the atmosphere we have, who spoke from outside," added the Italian. "Bale has never had problems with his team-mates and his team-mates have never had problems with Bale.

"So, too many words, and it would have been better to stay quiet.