By Fraser Watson Sky pundit Jamie Redknapp thinks Arsenal will be ruing the sale of Granit Xhaka following their defeat at Aston Villa. Having been dislodged from the top of the Premier League earlier in the day, Mikel Arteta’s side failed to respond as they went down 1-0 at Villa Park. John McGinn’s early strike proved match-defining, although there was late VAR controversy as Kai Havertz had an equaliser disallowed for handball. Despite controlling the contest for large parts, the Gunners appeared out-of-sorts for much of the first half. And Redknapp has cited the summer departure of the Swi…