Arsenal must sacrifice a striker if they're to convince Atletico Madrid to part with Kieran Trippier.

The Sun says it is believed the time eleven-time Spanish champions have demanded the Gunners to pay his full release clause of £34m.

This fee would likely be beyond Arsenal 's current financial means, however, they believe the Spanish side will be willing to negotiate.

However, they are also still seething with Arsenal's £45m signing of their former midfielder Thomas Partey; therefore, they will not be easy negotiators.

Only Pierre Emerick-Aubameyang, or Alexandre Lacazette would suffice, if any player exchange was going to happen.

The Gunners had reportedly floated the idea of offering want-away right-back Hector Bellerin for Trippier, but Diego Simeone's side rejected their advances.