Suwon Samsung coach Cha Bum-keun is promising his team's best effort in Friday's friendly versus English Premier League champ Chelsea FC.

In a press conference at the Seoul Shilla Hotel, he acknowledged Chelsea's superiority, but stressed Suwon will show why it is the reigning K-League champ.

Meanwhile, Chelsea coach Jose Mourinho said that despite problems adjusting to the time difference, his team will play a quality match and not disappoint.