Manchester City boss Pep Guardiola joked that Manchester United fans do not need to be scared about his side winning the treble this season, insisting it was still "far away".On Saturday, Riyad Mahrez fired Manchester City into the FA Cup final as the Algerian's hat-trick sealed a 3-0 win against Sheffield United at Wembley.Mahrez's superb display dispatched the Championship underdogs, ensuring City ended their run of three successive FA Cup semi-final defeats.The 32-year-old shattered Sheffield United's resistance with a penalty late in the first half and completed his treble with two clinical finishes after the interval.City's opponents in the Wembley final on 3 June will be the winners of Sunday's semi-final between Manchester United and Brighton.Guardiola's charges are back in the final for the first time since 2019, when they won the FA Cup for the only time in the Spaniard's reign.City are also in the hunt for the Premier League and Champions League titles.