City, who had been vying for a second Treble in two successive seasons, fell quick after Mateo Kovacic and Bernardo Silva missed their decisive penalties at the Etihad. Following last week’s 2-2 draw in the first leg in London, each groups had all to play for. Yet, Joshua Kimmich’s highly effective 63rd-minute header from Raphael Guerreiro’s cross sent the six-time European Cup winners by way of to the semi-finals 3-2 on aggregate. The Gunners now solely have the Premier League to compete for, with their season teetering on the edge of successful no silverware. Ruiz made a big-time assertion by …