Source.
We've come to the end of the Summer transfer window and it's quite obvious that there were some unexpected signing and spending. One of the biggest signing by Arsenal of Pepe with over £70M has been rated to be a great advantage on the team's side.
The biggest signing in the summer market was Harry Maguire for £80M, many fans and football lovers and viewers have actually tagged this signing the great mistake of the summer market, many believe Harry value isn't up to that, and his signing couldn't make United sign more needed players.