Martinez has already said that he wants to leave Bilbao, but Bayern have yet to agree a transfer fee with the Basque giants.
"Like I have said before, I just have to wait and I hope that there can be a quick resolution," the 23-year-old told Bild am Sonntag.
"I cannot say much more about the situation. I am relaxed and I am training to maintain my fitness and I just hope that a decision can be made soon."
Bilbao want Bayern to pay them €40m (£32m) for Martinez.