There were three red cards and two penalties scored in this fixture last season, which ended 2-2.
Brentford have either scored exactly twice (five times) or failed to score (three times) on each of their last eight league trips to Bramall Lane.
The Blades have scored in each of their last ten home league fixtures, a joint-league high with their opponents Brentford.
The Bees are unbeaten in eight away fixtures, the current longest run by any club in League One (W5 D3).
Sheffield United have picked up just three points from behind this season, a joint-league low with MK Dons and Preston North End.
Brentford have won 83% of the games in which they’ve led in League One, a greater share than any other club (19/23).