Vela will figure, fitness permitting, against Standard Liege in the Champions League clash at the Emirates on Tuesday as Arsenal seek the point that will guarantee their progress into the knock-out stages.
Wenger said: "He is like Robbie Fowler in the penalty area. He is left-footed and he is also very quick. Quicker than most people realise. Only Theo Walcott at the club is quicker than him.
"I want to give him his chance. He is back from injury and he has been putting in some great performances in training."
But Wenger insisted: "We are extending his contract at the moment. We get these players in at 15 or 16 and work very hard with them for five years. We do not then want to give them away."