D.C. United acquired Long Tan, a 24-year-old, Chinese-born forward, from the Vancouver Whitecaps on Thursday for a first-round pick in the 2015 MLS supplemental draft.

Meantime, General Manager Dave Kasper told the Insider the club is putting the “finishing touches” on a new contract for midfielder Branko Boskovic, whose deal expires in two weeks. An official announcement is expected in the coming days.

United wasn’t particularly in need of another forward, but the Tan trade was a no-risk move: The club had multiple roster slots available; Tan has permanent residency, so he wouldn’t occupy an international place; and he collects a low salary ($44,000).

The Whitecaps needed to make roster room to add a player during the month-long summer transfer period, which opened Wednesday. That’s why United didn’t need to give up much to acquire him.

“He’s an interesting prospect,” Kasper said. “He’s a big, strong, young forward with a lot of upside.”

Tan, the first Chinese-born player in MLS, joined the Whitecaps at the start of the 2011 season, made 13 league appearances and scored his only goal against United late in the year. This season he appeared in four matches.

He won’t begin training with United until next week.

United has two defensive trialists in camp, Mexico’s Gienir Garcia and France’s Xavier Tomas, through Monday and plans to make decisions on both shortly thereafter.