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The Midlands side is set to host Liverpool this midweek.
Kamara was substituted off in the 16th minute by Tyrone Mings, making a comeback from injury, while Bailey was absent from the squad owing to an issue.
When quizzed about Kamara's early exit from the game, Emery remarked: "I don't know now but I think it is not a lot."
About Bailey's condition, he commented: "Leon had a small pain and I think it is not a very important injury.
Unai Emery manager of Aston Villa during the Premier League match with Liverpool at Anfield.
The Villa squad is already missing Ezri Konsa, who was injured in the first half of the match against Tottenham last weekend, but Emery remains hopeful he can make a comeback in around a week.
It is a big few days for Aston Villa with Liverpool and Chelsea in quick succession, which could be defining for its Champions League hopes.
Pau Torres is on the brink of returning to the fray but hasn't resumed group training yet after sustaining a metatarsal fracture at the end of December
It wasn't a soft knock then!"
Liverpool.com says: Aston Villa will make things really difficult for the Reds but it would be a massive boost to get a win
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