Ole Gunnar Solskjaer warned “wasteful” Manchester United to be “more clinical” after they edged into the FA Cup quarter-finals with a hard-fought 1-0 win against West Ham on Tuesday.

 Solskjaer’s side were well below their best in a scrappy fifth round tie at freezing, snow-dusted Old Trafford. But a fine finish from Scotland midfielder Scott McTominay ensured United advanced to the last eight for a seventh successive season.