Arsenal’s thumping win over Sporting Lisbon in the Champions League has been slightly marred by an injury to Gabriel Magalhaes. The Gunners thrashed Sporting 5-1 on Tuesday night , producing a performance Mikel Arteta hailed as the best under his management in Europe. Goals from Gabriel Martinelli, Kai Havertz, Gabriel, Bukayo Saka and Leandro Trossard saw the away side pick up their third win from five Champions League matches this season. Sporting came into the match on an unbeaten run of 17