Keiran Gibbs coming on for Hegazi was probably more influential than Bruno coming off. Bruno struggled for the 5 minutes he faced Gibbs, uncharacteristicly scuffing a clearance straight out of play on one occasion.
He looks like he hasn't come to terms with the physicality of the Premier League yet.
As has already been said, he needs pace around him as he doesn't have a lot himself, which isn't a complaint.