Remittance to foreign coach

Ours is a sports academy and is planning to avail the services for foreign coach to provide training to the members. Coach is from Indonesia on a fixed monthly payment basis. Can you please help me in understanding the relevant tax provisions with regard to above remittances. The applicability of TDS , rate of TDS, requirement of filing return of income, if TDS is applicable which one is beneficial to coach as professional service or salary, whether he can claim refund, applicability of service tax, since the total remuneration will exceed Rs.10 lakhs. Your early response is highly appreciated, thanks in advance