Hurri needs a mentor

Hurri is 8.5 months old and comes from a Greek shelter. He is very friendly, has never shown any signs of aggression but he is still skittish in the city. He has a good recall in the forest and likes to play off leash with other dogs. He is gentle, playful, but not hyperactive. We are looking to make some friends in the forest first and then take some on leash walks with them in the city (starting from quite places). He loves dogs so much that a good doggy mentor could help him feel more confident in the city (social learning) by walking together.