The formerly coveted striker was a massive hit at Porto following his move from Mexican side Jaguares de Chiapas, scoring 92 goals in 132 appearances in all competitions.
Boasting strength, pace and natural finishing ability, many supporters at the Emirates implored boss Arsene Wenger to bring him in to provide competition for Olivier Giroud.
It was a decision which, at the time, would have made plenty of sense, such was his reputation as a goal-getter and the Gunners’ need to have an alternative up front.
However, looking at the situation with hindsight, did Arsenal dodge a bullet by not signing him?
Martinez’s record at Atletico Madrid hasn’t been good to say the least, scoring just three goals in 15 club appearances in all competitions, and now he struggles to make the first-team.
Speculation has come to the fore regarding his future, with claims he could be set for a swift exit from the Vicente Calderon, though Sky Sports have quoted him denying such rumours.
Still, the 29-year-old hasn’t settled in well at the La Liga club and he currently looks a shadow of his former self, appearing a yard slower, heavy footed and unable to link-up well with his teammates.
Signing Martinez for £25 million could have left the Gunners with an aging striker unable to tackle the rigours of Premier League football. Moreover, he could have hindered Theo Walcott’s progress.
On the balance of this season alone, it appears Arsenal made the right call not to pursue him, though the striker still has plenty of time left to make a telling contribution in Madrid.