Derek McInnes has made it two Kilmarnock signings in as many days as Ash Taylor pens a deal until next summer.
The centre-back has linked up with his former manager and admits it was an "easy decision" to sign up at Rugby Park.
Having worked under McInnes during two spells at Aberdeen, the 31-year-old is raring to go, saying promotion is the aim.
He told the club's website: “I’m really excited to join as I know what a great club Kilmarnock is having played against them in the past and I can’t wait to get going.
“Everything about Killie is exciting at the moment, especially the challenge to gain promotion back to the Premiership by winning the league.”
Taylor becomes McInnes's second addition of the window following Hibs winger Daniel MacKay in the door.
Taylor added: “The manager was naturally a huge factor in me coming here. I’ve had two spells playing under him so when I got the call it was an easy decision to make.”
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