The Blues, in a post on their website on Monday, confirmed that Kellyman has joined League One side Cardiff City on a season-long loan.
Recall that Kellyman joined the Premier League west London club last summer from Aston Villa.
The 19-year-old midfielder featured in Premier League 2 and the Premier League Cup for the club’s Under-21s last season.
Meanwhile, Man United confirmed that Williams has signed a new contract with the Red Devils before heading out on loan.
The 19-year-old put pen-to-paper on fresh terms with United that will run until 2028, with the option of a further year.
The forward will spend his second loan move away from Old Trafford in Scotland, with Falkirk.
Recall that Williams did well with Cheltenham Town in League Two on loan last season, scoring his first goals in senior football.
