Chadwick, 19, initially went to United`s Belgian feeder club, who play in the Belgian Second Division, along with Danny Higginbotham - who moved to Derby last month in a £2 million deal.
The right-sided midfielder, who earned an England Under-21 cap against Luxembourg last season, was keen to stay at Old Trafford to vie with Jonathan Greening for the role as David Beckham`s deputy this season.
The young winger has made just one first team appearance for The Red Devils since signing professional terms in February 1999 - in United`s 3-0 defeat to Aston Villa in last season`s Worthington Cup.