He scored in Tottenham's recent Europa League win over Shamrock Rovers.
Dos Santos said: "I've not had the playing minutes I would have wanted at Tottenham.
"I am in good shape and train every day.
"It's hard to say I want to leave, as I belong to them, but everyone saw I had six good months with Santander.
"Spurs did not let me go but there's been no shortage of offers for me - even though I have not been playing regularly. We'll see what happens in January.
"When I go away on international duty I am able to forget what is happening at my club. They are two completely different situations."