Delph expects claret and blue new-boy Tonev to shine in the top flight.
He said: “He’s very powerful as a player. He’s strong, he’s sharp, he’s direct too and he gives us another genuine goal threat.
“I have been so impressed with him. You rarely – if ever – get players who are two-footed in football these days. He’s great with both feet.”
For the big stories and the banter follow us on Twitter: @tribalfootball