Celtic claim a fee was agreed with Manchester City for John Guidetti prior to them taking the striker on loan.
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Swansea defender Jazz Richards has joined npower Championship title chasers Crystal Palace on loan for the remainder of the season.
Richards, who can play at full-back and in midfield, has been brought in by Eagles boss Ian Holloway to replace David Wright after he was allowed to leave the club.
The 21-year-old is expected to be available for Palace's next game against Huddersfield on Wednesday.
"Swansea were happy to let me go out on loan and when I spoke to the gaffer here...it was a great opportunity for me," Richards told the club's official website.
"It's a brilliant club to be coming into, sitting in the top six of the Championship.
"As a player you want to be fighting for a place in the Premier League and hopefully I can play my part in the club getting there."