The Colombian forward has long been considered one of European football’s best marksmen, with his goals to game ratio – roughly two in three – having impressed many top sides since his 2012 arrival from Chiapas in Mexico.
Liverpool are the latest giant to be aligned with Martinez, but Spurs are desperate to beat their rivals to the 28-year-old.
Even though Porto booked a spot in the Champions League last 16 and the player’s agent has admitted that a winter deal is unlikely, the Londoners are determined to get their man, with manager Mauricio Pochettino keen to bring in a striker capable of leading his attacking line.
Martinez is valued at upwards to £30m by the Portuguese club, who are known for their ability to drive a hard bargain in negotiations.
Arsenal have also been linked with the hit-man in the past, while Manchester United may look to him should they lose patience with Radamel Falcao.