The 22-year-old joined City from Everton last summer for an initial fee of £12 million but was hit by a series of injuries in 2012-13 and made just six starts in all competitions.
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Rodwell intends to build on his strong return at the end of the season, telling reporters: "I have a lot to prove to City fans, as they haven't seen the best of me yet, so I'm excited about that.”
Despite his upcoming wedding in Australia, the Three Lions man promised to stick to his tailored fitness regime over the summer.
"I'll have to be getting up before the missus while I'm on honeymoon so I can get my work out of the way then enjoy the rest of the day," Rodwell explained.
"I'll be doing something most days, even the day before the wedding – I can't go back in rusty. It's a new chapter for me and coming back for pre-season will be a fresh start – almost like a new career."