Arsenal are weighing up a stunning raid on North London rivals Tottenham for Toby Alderweireld.

The Sun says the Belgian centre-half, 30, could leave for just £25million — way below his market value — due to a clause in his contract extension.

And at Arsenal, he has been mentioned as they look to bolster Unai Emery's squad on a budget.

Without a Champions League spot the Gunners could have as little as £40m to spend on getting back among the elite.

Spurs may even look for fresh terms to wipe out the clause that puts the ball in the court of their European rivals.

Manchester United have been linked with the ex- Atletico Madrid star, while Chelsea are also keen.