article_snippet.sent: Manchester United scouts checked on FC Porto star Jackson Martinez
article_snippet.sent: Manchester United scouts checked on £30million-rated Porto striker FC Porto star Jackson Martinez last week .
article_snippet.sent: Manchester United are looking to add two strikers this summer. 
article_snippet.sent: Chelsea, Tottenham and Everton also sent scouts to watch Porto and Bayern last Wednesday while Manchester City and Juventus scouts were there to watch Alex Sandro, the Porto left-back.