The Innocent Mage by Karen Miller
""The Innocent Mage is come, and we stand at the beginning of the end of everything."
Being a fisherman like his father isn't a bad life, but it's not the one that Asher wants. Despite his humble roots, Asher has grand dreams. And they call him to Dorana, home of princes, beggars and the warrior mages who have protected the kingdom for generations.
Little does Asher know, however, that his arrival in the city is being closely watched by members of the Circle, people dedicated to preserving an ancient magic.
Asher might have come to the city to make his fortune, but he will find his destiny."
Mass market, a nice copy!