Former Manchester United midfielder Mickey Thomas fears for his old club.
Thomas says United face s a tough fight to retain the Premier League title, with only Marouane Fellaini joining the ranks.
He told the Daily Star: "I'm not sure what went on but it was crucial United got one or two more in. Will Fellaini be enough? City have four or five new players and Chelsea are looking strong. It could be a tough season for David Moyes."
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