Manchester United are planning a summer bid for FC Porto striker Jackson Martinez after sending scouts to watch the Colombia international in action.
This is according to the Daily Star, who cite reports in Portugal as claiming Louis van Gaal sent scouts to run the rule over the 28-year-old during Porto's 2-0 win over Moreirense on Saturday.
Martinez scored his 16th league goal of the season midway through the first half - and the positive feedback has reportedly convinced Van Gaal to seriously consider a summer bid for the South American striker whose contract contains a £27.5 million release clause.
Porto could accept £20m
The report adds that Porto could accept as little as £20 million for Martinez, who is also on the radar of Arsenal, Tottenham and Liverpool.
It's claimed that United's desire to sign the former Chiapas striker has plunged Radamel Falcao and Robin van Persie's long-term futures at Old Trafford into doubt.
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Both strikers have been criticised this season for their below-par performances, and there is now serious doubt that Manchester United will pay the £46 million required to turn Falcao's loan move into a permanent transfer.
Falcao: Martinez's international teammate
Falcao is, of course, an international teammate of Martinez - and, like the current Porto striker, he once plied his trade at the Estádio do Dragão.
Martinez has scored 85 goals in 120 appearances for Porto, while Falcao netted 72 goals in 87 appearances for the Portuguese giants.
Falcao's goals-to-games ratio is also more impressive at international level. The Manchester United striker, who turns 29 on Tuesday, has scored 21 goals in 54 games for Colombia, while Martinez has bagged 10 in 35.
Falcao could be finished
But there are concerns that Falcao is no longer the same clinical, world-class striker who lit up the Portuguese and Spanish leagues with Porto and Atletico Madrid, respectively.
The Colombian ace has scored a disappointing four goals in 16 appearances this season, and looks likely to head back to parent club AS Monaco at the end of the campaign.
Van Persie concerns
Van Persie, meanwhile, has looked a shadow of the striker who inspired Manchester United to their 20th league title during the 2012-13 campaign over the past 18 months.
The Dutch striker recently admitted that he was unsure if he will stay on at Old Trafford beyond 2016, when his current contract expires.