Manchester United have joined Barcelona and Everton in the race to sign Sevilla defender Federico Fazio, [football] direct news understands.Reports in recent weeks have linked several European sides with Argentine centre-back Fazio and [FDN] understands that United boss David Moyes is considering a summer move.Premier League sides Everton and Liverpool have also shown interest in the 26-year-old, whilst La Liga club Barcelona were impressed when they played Sevilla in February.Moyes will have to without Nemanja Vidic next season after he agreed a move to Inter Milan earlier this week and the Scottish boss is keen to bolster his defensive options.Fazio joined Sevilla in 2007 and has gone on to make 154 appearances.