Dani said: ''I had hoped Saints would give me another year to prove myself but it was not to be. I think I shall return to Portugal and rebuild my career.''
Chairman Rupert Lowe added: "It is very sad because he is such a nice lad, one of the sunniest and most genuine characters you could wish to meet.
"Unfortunately his injuries have obviously disrupted his progress and he has not fulfilled his potential. It may be that he would benefit from a fresh start at a club where he can play regular first-team football."We wish him all the best and really do hope he can bounce back and have a good career in the game."