Lucas has had to be patient so far this season, but Arsene Wenger says he has already shown his rich potential.
The Spanish striker scored twice in the EFL Cup third-round clash against Nottingham Forest, and laid on two assists for Mesut Ozil in the victory against Ludogorets.
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Wenger says Lucas will get another opportunity to impress against Reading on Tuesday night, and expects him to take his chance.
“He did extremely well against Ludogorets because he came on and gave two great goals,” the Arsenal manager said.
“He was a bit like the rest of the team against Middlesbrough, in that he could not have as big an impact because the whole team was not functioning as well.
“I believe he has the potential to be a great player for us. In training he continues to show he has the potential to play, he now has to transfer that into the games.
“The more he does that - against Reading he will have an opportunity - the more we will be tempted to say, ‘let’s do it’.”
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