Villa boss Paul Lambert signed Sylla from French side Clermont Foot on the final day of the transfer window, and Delph believes that the 22-year-old is ready to help his side's fight against relegation.
Delph told the club's official website: "He brings a competitive edge to training. If you train at 50%? That doesn't work for me. I have to train at 100%. Yacouba does that too.
"But there's more to him that just tackling and getting stuck in. He is a good player who is improving all of the time for us at the training ground.
"He got a feel for the action against Everton. He's ready to be called upon, definitely."
Sylla could feature when Villa host Manchester City on Monday evening.