Maro Itoje could be unavailable at a key stage of the Gallagher Premiership season after the Saracens second row was cited for a dangerous tackle against Bath on Friday.
Itoje is in danger of being ruled out for an offence that carries a minimum two-match ban if the citing is upheld when the independent disciplinary panel meets on Tuesday evening.
The England forward made an upright tackle on Bath's Alfie Barbeary at the Recreation Ground, making head contact in the process.
He was sent to the sin-bin with referee Luke Pearce viewing the fact it was not direct head-on-head contact as mitigation for not showing a red card, but the citing officer has since deemed the challenge to be a sending-off offence.
Saracens have two games of the regular season left – against Bristol and Sale – and are on course to finish in the play-offs as they look to retain their Premiership title.