Gareth Southgate has announced his England squad for the Three Lions' upcoming game against Spain in the UEFA Nations League.

And, unsurprisingly, one player Southgate has decided to call up is Everton's Jordan Pickford.

Pickford was outstanding for England in their run to the semi-final of this summer's World Cup and is now undisputedly the Three Lions' No.1 goalkeeper.

However, it has been a contrast in fortunes for Pickford's Everton team-mate Theo Walcott, who has again been overlooked by Southgate.

£18m-rated (via Transfermarkt) Walcott missed out on England's World Cup squad and looks to be far from Southgate's thinking despite starting the season in good fashion.

The 29-year-old has netted twice in Everton's first three opening Premier League fixtures and has looked like an overall threat in attack for the Toffees.

With that in mind and delving into Southgate's complete selection, Walcott may feel hard done-by.

The likes of Liverpool's Adam Lallana and former Arsenal team-mate Danny Welbeck have made little contribution to their side's so far this season -- especially in comparison to Walcott -- and, in this moment of time, the Everton man surely has to be a better bet.

Walcott's ability to play as a No.9 could also make him a valuable asset to Southgate now that Jamie Vardy has, in essence, announced his retirement from international football. And the implosion that is currently taking place at Manchester United under Jose Mourinho could have implications on Marcus Rashford's playing time and form.

Quite frankly, Southgate has missed a trick by deciding against calling up Walcott, at a time where the ex-Arsenal man has plenty to offer.