Phillips told the Express & Star: "Ishmael's got plenty of potential and I think he showed on Saturday he's got everything to his game.
"The one thing he needs to work on is his fitness and he knows that.
"That will come the more he plays, but I think with his goal he showed strength, pace and to cap it off, the finish was fantastic.
"He scored a similar goal on his debut against Preston. I'm sure he could go all the way."