Dislocated Shoulder

My son is 16 years old and is a pro. football player .He located his shoulder 3 times in the last 6 month.We saw 3 diff. prof. and all advised different treatments. The MRI showed nothing. One opinion was to operate, which will result in not playing disthe rest of the season and starting the next season late. Second opinion as to do spesific preventative methods and play normally with the shoulder taped. The 3rd opinion was to rest for the rest of the season build up the muscles around it and "teach" the shoulder not to dislocate. By the way, you can answer in hebrew...i read hebrew but i cannot type hebrew on my device. My son is israeli but plays in an academy in Europe. Thanks in advance, Sharon