Not sure how good his English is, but if he doesn't understand or speak English and being the only guy in the locker room that didn't, he could definitely feel secluded and unliked. Does anyone know if he speaks any English and if he doesn't, did he have a translator?
The Red Sox have a rich Latin culture. They have a Puerto Rican head coach. Assimilating new Spanish only speaking players is very easy and successful for them. Most if no NBA clubs have a Spanish speaking culture in their locker rooms. This could explain Juancho's displeasure and not making friends in multiple cities.