Japanese guard Yuki Kawamura has moved one step closer to achieving his NBA dream after he agreed to an Exhibit 10 contract with the Memphis Grizzlies, his Yokohama B-Corsairs said Sunday. The contract allows the 23-year-old to participate in the Grizzlies’ training camp with the team having the option of converting him to a two-way contract before the NBA regular season begins in October. The two-way contract allows a player to play for both an NBA team and its G League affiliate. “I received the offer and decided to take on the challenge,” said Kawamura, the 2022-2023 season MVP in Japan’s t…