Growler is right, the lower to the ground and the slower you move the better. He is running due to fear instinct, not because he doesn't know you. You may even want to not move towards him, but let him come to you. Call very softly and do have his favourite treats in your hand. If you can sit on the ground that would even be better.
Good luck! Maybe even get a humane trap to put outside where you saw him with some tuna/sardines in it to entice him in.
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