Deeney was playing for Chelmsley Town and making a name for himself when Shakespeare first saw him.
"I have monitored him closely because I was told about him when he was at Chelmsley Town," said Shakespeare. "He went from Chelmsley to Walsall and I actually went to see him play a couple of times.
"If I am honest, I couldn't really see the development that he has achieved. But I am really pleased and it just shows that there are those out there, as Jamie Vardy has proved.
"I would use the words determined and resilient to describe him because in today's sport industry you do have to be resilient. You do get knocks.
"You have to bounce back up and Troy epitomises that steely determination you need when you get the knocks, you have to come back stronger.
"He would be the first to admit that and he has that support in and around him, but I think he has matured as well."