Speculation has suggested that returning Blues coach Jose Mourinho would be prepared to let Mata leave Stamford Bridge this summer to free up space in his squad.
Such reports have caught the attention of Barcelona, with the La Liga champions prepared to take the World Cup winner back to his homeland.
It is rumoured that an offer has already been put to Chelsea for a player they snapped up from Valencia in 2011 and has helped them to UEFA Champions League and Europa League titles.
Mata has been a key figure for the Blues since his arrival, winning back-to-back player of the year awards and gracing the Premier League team of the year for 2012/13.
He insists he is giving little thought to transfer gossip, with his season about to stretch into a 69th game as Spain prepare to face Tahiti in the Confederations Cup on Thursday.
Mata said: "Obviously it's tough, talking about it physically, but I don't feel down, I still feel fresh and all I want is to play as many games as I can.
"I really enjoyed this season. It was a tough and long for us, but at the end we won a trophy so it was good.
"I really love to play with my national team, so all I can do is train and look forward to playing, because I love to play football."