Celtic beat FK Sarajevo in the Champions League on Tuesday night.
One of Celtic's Mikey Johnston or Lewis Morgan could replace a player bound for the other side of Glasgow.
Lewis Morgan is going back to his parent club Celtic from a loan spell at Sunderland.
Sunderland lost Sunday's League One playoff final to Charlton Athletic.
The Celtic-owned winger experienced heartbreak for Sunderland today.
Lewis Morgan, on loan from Celtic, was in action for Sunderland against Portsmouth.
Sunderland will welcome Celtic loanee Lewis Morgan back this weekend.
Sunderland were beaten 2-1 by Fleetwood Town in their last match.
Rangers are reportedly set to sign Motherwell's Hastie for £300k; the same fee Scottish Premiership champions Celtic paid for Sunderland loanee Morgan.
Lewis Morgan, signed on loan from Celtic, was in action for Sunderland against Peterborough United in League One on Monday.
Celtic picked up a 2-0 victory over Rangers at Ibrox in the last meeting between the two sides.
Liverpool beat Arsenal 3-1 earlier this season, with Dani Ceballos struggling against Jurgen Klopp's side.
Glasgow Rangers midfielder Ryan Jack is injured at the moment.
Scottish Premiership champions Celtic are reportedly battling Tottenham, Manchester United, RB Leipzig, West Ham and Lyon for the Chelsea starlet.
Moussa Dembele departed Celtic after two seasons back in 2018 and has since gone on to impress with Lyon.
Liverpool have been linked with making a move for Jadon Sancho, who caught the eye for England in midweek.
Giovani Lo Celso will have to wait for his first Tottenham Hotspur start as he is set to spend some time on the sidelines.
Tottenham Hotspur appear to have Yago Santiago back with the club.
Rangers have already agreed to sign Northern Ireland midfielder Charlie Lindsay from Glentoran.
Tottenham Hotspur striker Troy Parrott is regarded as the best up and coming talent at the club right now.
Brendan Rodgers has helped Celtic beat Rangers to Lewis Morgan.