Fergie could have up to a dozen first-team players out with injuries for the FA Cup clash with Tottenham on Saturday.
“No I won’t be doing that,” Ferguson said.
“I do have options. Hopefully Neville will be OK, then I can play Fletcher at right-back, so with Nemanja Vidic and John O’Shea we would have an experienced back four.
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“Alternatively, if we thought Eckersley or Fabio could be one of the full-backs Fletcher can play in midfield.”