But Portsmouth lost several high-profile players over the summer, and the team made a poor start to the current campaign.
However, Hart was working under severe financial restraints due to uncertainty over the club's ownership which left it on the verge of going into administration.
Arab businessman Sulaiman Al Fahim purchased Portsmouth in August but failed to deliver fresh investment, with the players' wages not paid on time in September.
He then sold his majority shareholding to Saudi tycoon Ali Al Faraj in October, but Hart's hopes for stability were then hit by the Premier League placing a transfer embargo on Pompey over debts owed to other clubs.
Portsmouth have three consecutive home matches ahead, with Manchester United's visit on Saturday followed by a Carling Cup clash with Aston Villa on Tuesday and a league tussle with Burnley four days later.
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