By Tom Gott Manchester United manager Erik ten Hag has warned Sir Jim Ratcliffe that he must oversee a strong summer transfer window if the Red Devils are to compete for the Premier League title next season. With a spot in the top four almost mathematically impossible, United find themselves in a battle to seal any form of European football this year, with Ten Hag also hoping to avoid leading the team to their lowest Premier League finish ever – currently seventh from 2013/14. While Ten Hag argued injuries have hampered his side’s push for Champions League qualification, he insisted the squad …