Our no.7 was on hand to convert Bruno Fernandes’s clever pass with 13 minutes gone, but the game turned when Wan-Bissaka was dismissed for a foul on Young Boys’ Christopher Martins, just after the half-hour mark.
The home side dominated for large parts after that, going close through Christian Fassnacht, before Moumi Ngamaleu equalised with 24 minutes left on the clock.
Young Boys pushed hard for a winner late on, but it seems like the Reds, inspired by David De Gea and Raphael Varane, would cling on to earn a point in Group F.
But Jordan Siebatcheu popped up with virtually the last kick of the game, taking advantage of a mistake to give the Swiss side victory.