Ben White has been ruled out for the rest of the season through injury in a significant setback to Arsenal ’s bid for a Premier League and Champions League double. White left the London Stadium with a brace on his right knee after he was substituted in the first half of Arsenal’s crucial 1-0 win against West Ham on Sunday. Manager Mikel Arteta admitted in the immediate aftermath of the match that White’s injury “didn’t look good at all”, and Arsenal have now confirmed he will be unavailable for their final two league games, and their European final against Paris Saint-Germain on 30 May. The injury is also set to end 28-year-old White’s World Cup prospects after he recently called time on his four-year international exile with appearances in England’s last matches against Uruguay and Japan.…