The Mexico international is desperate to kickstart his flagging career.
"I'm either leaving the club this summer, or I'll sign for another club for free in six months time," Dos Santos told Medio Tiempo.
"I am very calm [about my future]. I have a contract with Tottenham and I don't know what will happen. I might leave the club. I'm at a good team, but I want to play.
"However, it's not my decision as to whether Tottenham sell me or hold on to me."