Arsenal are being heavily linked with re-signing Carlos Vela, who they allowed to permanently move to Real Sociedad two years ago.
Vela has a release clause of just £3.8 million in his contract, which can be activated this summer.
The Mexican will not be at the World Cup either, after a fall out with the country's football federation, meaning he would be able to partake in a full pre-season programme with the club.
The reasons for Arsenal signing their former trainee are quite clear, and illustrated in his numbers.
In two seasons at Sociedad, Vela has scored a staggering 34 goals and provided 24 assists.
That includes 20 goals and 14 assists this season, and 14 goals and 12 assists last season, during which he helped Sociedad to a top four finish.
Now 25-years-old, Vela has this season played in various positions, but the majority have come as a right sided attacker.
This could see him battling for position with Theo Walcott next season, but his versatility to play up front can also be of help.
Vela started nine games as a striker this season, scoring four times, and his signing can add real depth to the side.
He is a very different type of striker to Olivier Giroud, and even Karim Benzema, and has the pace to enable him to thrive on the passes on Mesut Ozil, and even get the best out of the German.
Vela's creativity saw him rack up an average of 2.2 key passes per game this season, the seventh highest in La Liga - and more than total assist leader Koke, Cesc Fabregas, Neymar, and Cristiano Ronaldo.
The fear is that Vela will slip back to being a squad player rather than a key player as he is at Sociedad, but his experience in Spain will hopefully ensure the boy who left, returns as a man.