Speculation has been rife about both the Dutch coach and the out-of-form playmaker lately but Begiristain claims the club remains keen to keep hold of both.
"We are very happy," he told Sky Sports News. "We recognise Frank is so important for us. With him as coach we had better results - we were champions in the championship (in 2005 and 2006), champions in the Champions League (in 2006). We are so happy with him that we will keep him."
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