Leeds United transfer news: Teenage defender loaned out to work with Duncan Ferguson
Mullen, who joined from Liverpool in 2022, is a Scottish under-19 and -21 international.
He joins a Caley side who are a point above the play-off relegation spot in the Scottish Championship, having played a game more than Queens Park. Bottom-placed Arbroath are only three points behind.
Equally, Duncan Ferguson's men are six points off the play-off places.
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