Watford's inability to hold on to a lead against Chelsea left Walter Mazzarri frustrated and hoping his new faces can provide a boost.
Walter Mazzarri hopes the signings of Younes Kaboul and Roberto Pereyra can help Watford improve in the crucial moments of matches after Saturday's 2-1 defeat to Chelsea.
The duo agreed moves to Vicarage Road on Friday and were presented to the home faithful prior to kick-off, but they then watched on as Watford threw away a one-goal lead.
Etienne Capoue fired the Hornets ahead just before the hour with his second goal in as many games, but Chelsea scored twice in the final 10 minutes to take the points.