Watford coach, Walter Mazzarri, is hoping Isaac who just returned to training from a hamstring injury is declared fit by club's medics.
The £12.5m club recording summer signing from Granada missed out on Watford's 1-1 at Southampton on the opening weekend of the 2016/17 Premier League season.
Ahead of their home game against Chelsea this weekend, Watford coach, Walter Mazzarri, is hoping Isaac who just returned to training from a hamstring injury is declared fit by club's medics.
Speaking on the former Nigeria youth international, Mazzarri expressed his hopes that the 20-year-old forward can play alongside the established pairing of Troy Deeney and Odion Ighalo.
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“Success is a player with a lot of potentials and this can help Deeney and Ighalo to work harder, knowing that there is one other player in their position,” Watford coach said in a press conference.
“There is the possibility for all three of them to play together if the team allows," he added.
Success played in some pre-season games for Watford before his injury.