Manchester United players celebrate their first goal scored by Manchester United's Armenian midfielder Henrikh Mkhitaryan during the pre-season friendly game between Manchester United and Sampdoria at the Aviva stadium in Dublin. Pic/AFP

A goal in either half from Henrikh Mkhitaryan and his replacement Juan Mata helped Manchester United to a 2-1 victory over Sampdoria at Dublin's Lansdowne Road in the Reds' final pre-season game on Wednesday.