Kenny, who is only 16, has been a regular for the U-18s this term.
Sheedy told the Liverpool Echo: "Jonjoe stepped up from the U-16s and unlike some of the younger lads he has made the transition without hitting a wall.
"He's made really good progress and is a versatile player able to do a job for us in a variety of positions.
"JonJoe is still growing so he's not as tall as some of the players he's facing but he's got a great spring and doesn't get beaten often in the air.
"He's like an old-fashioned throw back of a player in the way he loves a header and a tackle but at the same time he reads the game superbly. I'm pleased with him."