The Chelsea goalkeeper is currently on loan at Sheffield United.
Blackman moved to Sheffield United on a season-long loan from Chelsea last summer.
Aleksandar Mitrovic scored twice for Fulham against Sheffield United on Tuesday night.
Leeds United are looking to catch Sheffield United in the race for a top six space.
Tottenham Hotspur are said to be considering making a move for Sheffield United's David Brooks.
West Bromwich Albion could be set for a change of manager, and several Sheffield United fans are worried they might follow suit.
Chris Wilder says his Sheffield United team are "maxed out" following Hull defeat, but is this simply mind games from the manager?
If West Brom sack Alan Pardew as manager then should they look to the Championship with these Bristol City, Fulham and Sheffield United bosses?
Sheffield United’s Danny Lafferty is among those in contention to start against Leicester City this weekend.
Paul Heckingbottom's first Leeds United game ended in defeat on Saturday.