The France defender put pen to paper on a reported five-year deal, which will keep him at the Premier League club until 2030. Saliba, whose previous contract was due to run until 2027, extended his stay at the Emirates Stadium despite reports of interest from Real Madrid. Since then he has been at the heart of an Arsenal side that has finished second in each of the past three seasons in the Premier League. Elsewhere, Manchester City travel to Monaco, while Newcastle face Union-Saint Gilloise away on Wednesday. Wednesday's Champions League fixtures:Qarabag v Copenhagen, Union-Saint Gilloise v Newcastle (both 6.45pm), Monaco v Man City, Dortmund v Athletic Bilbao, Napoli v Sporting, Villareal v Juventus, Barca v PSG, Leverkusen v PSV (all 9pm)