RAC1 is the most reliable source you'll get concerning Barca by the way.
I don't think he'll leave. He loves Barca and he knows he's only 22 and his chances will come. But he needs to be assured by the management that he'll get much more minutes next season.
Don't know if he loves Barca or not but before he signed his first team contract he said this:
Thiago: "I would lie if I say my dream is to be successful in FC Barcelona. My dream is to be succesful in football."
His father as well has bemoaned his lack of playing time countless times now. It isn't far-fetched that he'll leave. Xavi, Iniesta, Fabregas, Thiago for 2 positions. 1 will always be unhappy.