manchester united hope to sign two new strikers this summer .
robin van persie has been disappointing for much of this season .
serie a giants juventus and inter milan are both keen on the dutchman .
united are interested in paris saint-germain striker edinson cavani .
adrian durham : rooney and carrick are the only man utd players with the ` football intelligence ' demanded by louis van gaal .
click here for all the latest manchester united news .