Aurelien is now walking around in a boot, which means he will be sidelined for at least the next week. (Photo courtesy of MLS)

Red Bulls midfielder Daniel Royer, who participated in full training with the team Tuesday, could very well play for the team in the next two games.

The Red Bulls host the Philadelphia Union at Red Bull Arena Sunday and play at Sporting Kansas City in the Lamar Hunt/U.S. Open Cup final next Wednesday.

“We will see where he’s at on the weekend and we’ll see where he’s at for the Open Cup,” head coach Jesse Marsch told reporters Tuesday.

Center back Aurelien Collin, who did not practice, and is walking in a boot these days.

Collin is expected to start training early next week.

“We’re hopeful we’re on top of it,” Marsch said.

Defender Michael Amir Murillo, who returned from Panamanian World Cup qualifiers with an ankle injury, did not practice and is expected to start training soon.

Front Row Soccer editor Michael Lewis has covered 13 World Cups (eight men, five women), seven Olympics and 25 MLS Cups. He has written about New York City FC, New York Cosmos, the New York Red Bulls and both U.S. national teams for Newsday and has penned a soccer history column for the Guardian.com. Lewis, who has been honored by the Press Club of Long Island and National Soccer Coaches Association of America, is the former editor of BigAppleSoccer.com. He has written seven books about the beautiful game and has published ALIVE AND KICKING The incredible but true story of the Rochester Lancers. It is available at Amazon.com.