Steve Bruce after Brentford loss: My new signings will be thinking dear oh dear
The pair were two of seven signings made by Bruce in the January window as he looks to secure an instant return to the Premier League with Villa.
Conor Hourihane in action during his Aston Villa debut
Bruce admits the pair would have been hoping for better debuts but he is convinced all of his new additions will come good at Villa Park.
He said: "With the new faces, I'm convinced they'll make us better. They've performed at very good levels.
Birkir Bjarnason in action for Villa during their 3-0 defeat to Brentford at Griffin Park
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"They'll be scratching their heads I'm sure thinking 'dear oh dear, what a debut that's been. But they'll be good for us.
"I'm convinced about that. We have to get the team and the mentality right and find a toughness, especially away from home."
Villa currently sit 14th in the Championship and find themselves 10 points adrift of the play-off places.