The 21-year-old joined Chelsea from Anderlecht in 2011, but has started only one Premier League game for the club - enjoying season-long loan spells at West Brom and Everton.
The Brazilian midfielder joined Spurs from Corinthians in a big-money deal last summer, but struggled to produce the type of consistent performances that had been expected.
Hart had a spell out of the team at the Etihad Stadium after some disappointing performances led to Manuel Pellegrini bringing in Costel Pantilimon.
In his first interview since being sacked as Manchester United manager the 51-year-old Scot thanked Sir Alex Ferguson for his support during his 10-month spell at Old Trafford.
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