*So FedEx Field will host a major friendly this year. What about RFK Stadium? D.C. United is exploring the possibility of a match on July 27-29 between the MLS side and an international opponent.

Other dates are under consideration, as well, but the window of opportunity appears narrower this year. Last summer United played Ajax and Everton. The year before, it was AC Milan, Portsmouth and El Salvador’s national team. However, fewer European clubs are seeking U.S. tours this summer and outside events (World Cup qualifying, Olympics, U.S. Open Cup) fill the calendar.

As part of the season ticket plan, United promises three non-regular season matches, though not necessarily international friendlies. Late-round Open Cup games and the MLS playoffs are among the club’s options.

The Washington Redskins, who are hosting the USA-Brazil friendly in May, are also seeking a club exhibition in late July.

*United, which has been training in the Phoenix area since Tuesday, will play Sporting Kansas City on Saturday at 2 p.m. ET in Casa Grande, Ariz. United’s secondary Twitter feed (@dcugameday) will provide match updates. United will then face Real Salt Lake on Tuesday.

During the Florida phase of training camp, United drew with the Chicago Fire, 0-0, and Swedish club Malmo, 1-1.

*Blake Brettschneider, the second-year forward who was released last week, says he has been offered a trial by the New England Revolution.

*Austin da Luz, the left wing who declined an invitation to training camp in order to pursue other opportunities, is in Real Salt Lake camp. {UPDATE: RSL released da Luz today.}

*Midfielder Brandon Barklage, released after last season, is on trial with the New York Red Bulls.

*Charlie Davies, who this week sounded off about his 2011 season with United, was named to Sochaux’s game-day roster for Saturday’s match against Rennes (3 p.m. ET, www.foxsoccer.tv).

*As planned, reserve midfielder Kurt Morsink underwent surgery to repair nerve damage between toes. He will be sidelined four to six weeks.

*There’s still no word on the identity of the young Brazilian trialists who were scheduled to join the club for training this week.

*United officials met with the Honduras technical staff to discuss Andy Najar’s Olympic and national team call-ups this year.

“We know what Honduras means to Andy, and we definitely want to see him succeed with his national team,” Coach Ben Olsen said, according to United’s Web site. “However, there will be times when we will need him to remain with us, but he will always get the same treatment as our other players who receive international call-ups.”

If called for Olympic qualifying this spring, Najar would miss two or three United matches. United’s top U.S. candidates — Bill Hamid and Perry Kitchen — are in the same situation, heightening the importance of United reinforcing its depth chart this preseason.