Barcelona have sent scouts to run the rule over Porto star Nicolas Otamendi, reports Spanish daily Marca.
Officials at the Nou Camp are on a mission to find reinforcements as Barcelona look to fend of challengers Atletico and Real Madrid in La Liga.
Gerardo Martino reportedly wants a defender and a striker to add steel to their title challenge and it seems that Porto's Jackson Martinez and Nocolas Otamendi fit the bill.
Reports earlier today suggested that Barcelona scouted Chelsea target Martinez over the weekend but Marca says that representatives from the Nou Camp weren't just at Porto's tie against Nacional to watch the Colombian striker; they were also present to observe how Otamendi fared.
The Argentinian defender has been in terrific form this season and has attracted interest from former Porto manager Jose Mourinho at Stamford Bridge as well as David Moyes at Manchester United.
Moyes is hoping to reinforce his defence as long standing defenders Nemanja Vidic and Rio Ferdinand enter the twilight of their careers.
Similarly, Mourinho needs to find a long term replacement for John Terry and it is believed the £25m-rated Otamendi was high on both their lists.
It would take a serious offer from both Chelsea and Manchester United to convince the 25-year-old to reject the advances of Barcelona, who will undoubtedly be able offer a better chance to win major silverware than their European counterparts.
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