Mou was speaking after victory over Granada.
"I have to reiterate the opinion I have about this president, the CEO and the board. This transfer period has been an example to society, demonstrating respect for the economic and social state of Europe, spending less than we have earned and doing two fantastic deals with Lass and Granero," he said.
"They were in the final year of their contracts and in January they could have negotiated with another club. They could have turned down renewal deals and could left on a free transfer. We had the intelligence and acumen to make the most out of two players who have not wanted to renew."