Joe Shaughnessy says there is "something starting" at St Mirren after the Irish centre-back joined Jim Goodwin's side on a two-year deal.
The former Aberdeen and St Johnstone defender, 28, returns to the Scottish Premiership after a season in English League One with Southend United.
And he is joined in Paisley by Isak Thorvaldsson, 19, who has agreed a season-long loan from Norwich.
"The manager really sold the club to me," Shaughnessy said.
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"His ambition came across really well and it made me feel like there is something starting here and I want to be a part of it.
"I feel well suited to the Scottish game and hopefully I can bring what I learned in England to here."
The former St Johnstone skipper brings "fantastic leadership," says Goodwin, who is also excited by Icelandic teenager Thorvaldsson.
"He's a midfielder who can do a little bit of everything," he told the club website. "He's a physical player but also technically very good."
The duo join on-loan midfielder Nathan Sheron, defender Richard Tait and goalkeeper Jak Alnwick as the Buddies rebuild.
"All these boys we are bringing in fit a certain profile and Joe ticks every box," added Goodwin.
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