Manchester United will have the support of the Toffees boss, who used to manage the Saints, when they take to the field at Wembley on Sunday
Ronald Koeman will be cheering on Manchester United in the EFL Cup final against his old club Southampton, as their victory would boost Everton's European qualification chances.
Everton are currently seventh in the Premier League, a spot that could secure continental football as long as United win the EFL Cup and a team above Koeman's side in the table claim FA Cup glory.
The Dutchman swapped Southampton for Everton last year, but he will not be backing his former employers for Sunday's final at Wembley as a result of the potential implications for Everton.