The former Fulham midfielder signed for the Potters yesterday.
Macari wrote in The Sentinel: "It might be that Sidwell has been brought in as a replacement for an existing midfielder - after all Steven Nzonzi handed in a transfer request last month.
"If that is the case then Hughes will be delighted to get his man in early and not be scrambling around for a player if Nzonzi, or any other midfielder, is sold on.
"Hughes is not only getting a reliable performer, he's getting a player he knows and trusts having also signed Sidwell when he was manager at Fulham."
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