“The timing is rather surprising for everyone involved,” Stephan said. “We did not think he would be included up until Tuesday evening. The first thing that was a bit bizarre was changing the first and second leg, this is now the second thing that has happened that changes things. Hopefully, there will not be any more surprises and the referee tomorrow will be great.
“It changes a lot of things because, with Lacazette, they can play more formations, including the 3-5-2 with the two strikers, which they played against Manchester United. Obviously, his presence changes the facts.
“We were not aware that they had appealed the decision. The red card had been given about a month ago, so it is a bit strange it has come 48 hours before the game, but it is what it is and we have to make do with it. We have got no time to waste with Uefa, we are here to concentrate on our game.”
Lucas Torreira, the Arsenal midfielder, said Lacazette’s return would make them even more dangerous for Rennes, who struggled against Emery’s team in the first leg until Sokratis Papastathopoulos was shown a red card a few minutes before half-time.
“We all know how important Lacazette is to us as a group and obviously the more players we have, the better it is, because we do have some quality players, particularly in midfield and up top,” said Torreira. “Hopefully, we will be able to make that danger pay.”