 Pattaya United was Sean's next stop where he was signed to be the club's 1st Team Head Coach.During his time as Academy Director and B Team Head Coach at Muangthong United FC, 32 players went on to play in Thailand's top league and 8 players have become senior Thai National Team players.In 2017 it was reported that Muangthong United had sold players from their academy and B team to other clubs in Thailand for transfer fees in excess of $4,000,000 USD.