Manchester United and Liverpool want the same player to solve a problem position

Liverpool and Manchester United could both be in the market for a new left-back this summer.

Liverpool's need is evidently greater, as Alberto Moreno is their only natural player in the position. James Milner, a right-footed midfielder, played left-back last season and impressed. However, with European football next season, and more games for Jurgen Klopp's side, a recognised left-back, whom the manager trusts, will be essential. United also have trouble in that position, but not through a lack of options. Jose Mourinho just doesn't appear to rate Luke Shaw, and primarily used Matteo Darmian or Daley Blind at left-back. According to The Mirror, both managers are interest in signing Celtic's Kieran Tierney to solve their issues at left-back. The Celtic defender has been linked with a move to Old Trafford for a few months. Tierney impressed under Brendan Rodgers last season, as the Scottish champions went the season unbeaten and won a domestic treble. The 20-year-old's form has earned him four Scotland caps and caught the attention of clubs in the Premier League. Liverpool could move for Tierney instead of fellow Scottish left-back Andrew Robertson. The 23-year-old who was part of Hull City's team that were relegated from the Premier League last season. According to The Independent, Tierney would cost €17m, a fee United and Liverpool could both easily afford.