Arsenal great Paul Merson feels that Lucas Torreira has filled the void left by Patrick Vieira and Gilberto Silva over a decade ago at the clubThe 22-year-old midfielder arrived in the summer from Serie A side Sampdoria for a £26m transfer fee.After a difficult start to life in London, Torreira has become a key part of the Arsenal squad that have gone their last 22 matches without defeat following Thursday night’s 1-0 Europa League win against Qarabag FK.“They’ve been crying out for someone like him since Gilberto Silva and Patrick Vieira,” Merson told Sky Sports.“He gets around people, closes players down, gets everybody fighting. He’s not a natural passer, but he sets the tempo.“I’ve said all along, for years and years; Arsenal are one of the best teams in the world with the ball. But for the last four or five years they’ve been one of the worst in the world without the ball. He has changed that.“When Torreira gets around people, it’s a domino effect, and everybody else rallies and gets around the opposition players.Jose Mourinho is sold on Lampard succeeding at Chelsea Tomás Pavel Ibarra Meda – September 14, 2019 Jose Mourinho wanted to give his two cents on Frank Lampard’s odds as the new Chelsea FC manager, he thinks he will succeed.There really…“And his attitude is great; he leaves nothing on the pitch and gets stuck in. He gets people going. He’s done absolutely outstandingly well, and came up with two massive goals in the last couple weeks.”Despite expecting Torreira to improve though, Merson doubts any of Arsenal’s rivals will be in a hurry to sign him.“Liverpool wouldn’t buy him tomorrow morning, I wouldn’t have thought any of the top four would. He can and will get better, but he’s done great,” added Merson.“They needed it, we all knew that, Arsene Wenger knew it but he was too stubborn to go and get someone.“He could be playing at Southampton and wouldn’t get a mention, or Burnley. No-one would mention it. It’s just that Arsenal needed it so badly.”Arsenal will next take a trip to St Mary’s to face Southampton in the Premier League on Sunday.