Manchester United are reportedly one of a number clubs monitoring the situation of a frustrated Barcelona star ahead of a possible summer transfer. United are stepping up their search for new players, with a fresh focus on recruitment and identifying youth talent since the arrival of Sir Jim Ratcliffe in February. Manchester United have been linked with Barcelona forward Vitor Roque, who signed for the Catalan club amid much fanfare in January, only to fall out of favour with Xavi in recent weeks. The 19-year-old, a €40 million signing from Athletico Paranaense, has not played for Barça since their LaLiga game against Cadiz on April 13th and cut a frustrated figure on the bench during Saturday's 4-2 defeat to Girona.