Since breaking into the first team in the early 1990s, Neville has made 565 appearances for the club and Ferguson says the new deals for both him and Giggs are vital.
"Gary, Ryan and Paul Scholes are the spirit of Manchester United and so we are delighted that Gary has signed for another year," said Ferguson.
"He is a true professional and I admire how he has overcome an injury which kept him out for over a year, returning as good as ever. He deserves this new contract and we are very happy to have him here."
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