The Spaniard looks certain to depart Stamford Bridge in the summer but his fellow countryman hopes there is a good job out there for him after helping the Blues reach the semi-finals of the Europa League and oushing for a top-three finish in the Premier League.
"Rafa is a manager who has had great seasons in every club that he has worked,” said Mata ahead of the second leg in London following Chelsea’s 2-1 win in Basel last week.
"Since he came he just tried to do his best for the team. For me and for the players he's a great manager. We're now at the end of the season trying to be in third position, which is our aim, and having the chance to win a trophy.
"Maybe the season will be good at the end and good for Rafa, as well."