Bath head coach Mike Ford believes Owen Farrell should have been sent off for a high tackle on Anthony Watson.
Watson went off for a concussion test and did not return after the early challenge from the England fly-half, with Farrell going on to score Saracens first try and win Man of the Match.
Ford revealed that he spoke to referee Wayne Barnes about the incident, with the official conceding that he should have looked at the incident more closely with the TMO.
"I've got big concerns with it and I've spoken to Wayne Barnes about that," said Ford.
"It's an illegal challenge, square on the nose, we lose one of our best players and [Farrell] goes on to win Man of the Match.
"I saw it as a red card. Barnes said he should have looked at it more closely on the TMO."
Farrell told BT Sport that he had apologised to Watson after the match and that the incident was unintentional.
The England fly-half could well be cited, with the low-entry point for a high tackle being a two-week suspension.