Ole Gunnar Solskjaer has achieved his first target by landing the Manchester United manager’s role on a permanent basis but plenty of work remains for the Norwegian to do, starting with Watford’s visit to Old Trafford on Saturday. Manchester United’s new full-time manager Ole Gunnar Solskjaer AFP/Oli SCARFF The 46-year-old was a popular choice to become full-time successor to Jose Mourinho after an impressive caretaker spell in which United won 14 of his 19 games in charge. AFP Sports looks at what comes next and the challenges that lie in wait for Solskjaer. TOP-4 FINISH A PRIORITY Since Solskjaer’s arrival, United have cut the gap to the Premier League’s top four from 11 points down to two but a strong finish to the campaign is still needed to secure Champions League football next season. Beat Watford at Old Trafford and United will pull level on points with third-placed Spurs, who have taken just one point from their past four league games and travel to title-chasing Liverpool on Sunday. “Now we’ve given ourselves a great chance to be in the top four, even the top three,” said Solskjaer on Thursday. “That’s got to be the short-term target.” STRENGTHEN THE SQUAD Regardless…