Noble has missed both games so far this season, while Haller and Anderson were missing for the 1-1 draw with Brighton.
The trio were pictured in training today but Football.London reported they had already begun training with the squad earlier this week.
Football.London claims there are no further injury problems and that manager Manuel Pellegrini will reveal whether the trio are likely to play against Watford on Saturday in his pre-match press conference tomorrow.
Anderson and Haller are key attacking players for West Ham and having them both back for the visit to Vicarage Park on Saturday could be key to getting three points. Watford are anchored at the bottom of the Premier League after losing both games in the league so far, conceding four goals and not scoring. Haller is the club’s record signing and he comes with fearsome numbers behind him from last season when he scored 20 goals and registered 10 assists across all competitions. According to WyScout he had an xG of 0.47 and won an average of close to 50% of 13 aerial duels per 90 minutes. He hasn’t had a chance to show what he can do for West Ham yet after the mauling by Man City in the first game of the season and will be desperate to get off the mark against a struggling Watford side.