In the 76th minute, with Arsenal having just equalised, and with the game there to be won against a clearly wounded Manchester United, Mikel Arteta made a telling substitution. On came Kieran Tierney, with the left-back, unwanted and on his way back to Celtic at the end of this season, asked to play as a winger. On the bench stayed Raheem Sterling.
Arsenal’s title challenge has collapsed after an epic failure of recruitment
