D.C. United completed its fourth trade in seven weeks yesterday, acquiring Annapolis native Devin Barclay from the San Jose Earthquakes for a conditional pick in the 2005 Major League Soccer draft. The teams also exchanged picks in the upcoming supplemental draft, San Jose receiving the first overall selection and United getting the sixth choice.

Meantime, United has invited two-time U.S. World Cup midfielder John Harkes, who played for D.C. from 1996 through 1998, to its Florida training camp starting Sunday for a week of workouts. Harkes, who will be 36 next month, would have to accept a low salary in order to join United's full-time roster.

Barclay, a forward/midfielder who will turn 20 in April, becomes the 13th new player to join United this winter through signings, trades and the draft. He will join the team Sunday.

"He's a very versatile player who can help us up front or on the flanks," United technical director Dave Kasper said. "He's a good fit for our team."

Barclay had an impressive rookie season in 2001, getting three goals and two assists in 23 appearances (12 starts) for the Tampa Bay Mutiny. After Tampa Bay folded, San Jose claimed him in a dispersal draft, but he made only 12 appearances (two starts) and didn't have any goals or assists last season.

He is listed as a forward, but started on the right side of midfield in the Earthquakes' exhibition victory over a Chinese club on Sunday in San Francisco. As a Project-40 developmental player, Barclay is exempt from roster and salary cap restrictions.

Barclay played two seasons at McDonogh School in Owings Mills, Md., before entering the U.S. under-17 residency program in Bradenton, Fla. He has played for every U.S. youth national team and is likely to start for the under-20 squad at the world championship in the United Arab Emirates next month.

D.C. also is hoping to obtain former Colorado midfielder Joe DiGiamarino, 25, who likely will be allocated through a weighted lottery next week. DiGiamarino has spent the last few years in Germany. French midfielder Simon Toselli, 23, and republic of Georgia defender Ioseb Devidze, 22, will begin tryouts late this week.