Wigan Athletic have signed defender Andy Kellett from Bolton Wanderers and striker Haris Vuckic from Newcastle United.
Kellett, 21, who signed for Manchester United in a surprise loan deal last season, is joined by 20-year-old Jack Hendry from Partick Thistle.
After playing 10 games for United's development squad last season, Kellett joins the Latics on a three-year deal.
Vuckic, 23, joins Wigan on a loan deal until the end of the season.
Wigan have also extended the loan of midfielder Sean Murray, 21, from Watford until 16 January.
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