Sharp, who was close to the Scottish manager during his time at Everton, claims the 50-year-old will need to spend during the January window.
"When you look at David Moyes' squad, he needs to strengthen," he told talkSPORT. "He was after Cesc Fabregas and Leighton Baines, among others, but it just didn't happen.
"I think they'll be really active in the January transfer window if the players become available."
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