The midfielder comes off contract in June.
Aluko said: "We have just started talking. The focus is on games and getting fit again. I am sure it will get done. No doubt it will drag on, as negotiations do, but I am relaxed about it. It's football so nothing would surprise you but I am sure it will get done.
"I am enjoying my football, I love the team and the stage we're on. It is more than a dream to play on this stage and I just want to be fit and enjoy the games.
"We have a good team and good players and we have shown that so far and seven points is a fair reflection of how we are playing."