New York Red Bulls head coach Mike Petke has not yet decided when he will allow two of his stars to link up with their national teams.
Australia want midfielder Tim Cahill in camp on the New South Wales central coast from May 15 while Costa Rica are adamant that left-back Roy Miller is required for the start of their two-week training camp which also kicks off next week.
"It's a tricky situation, especially with Costa Rica," said Petke.
"They usually are very adamant about wanting Roy, now and there's no questions asked. When it's a friendly game two years out from the World Cup, there's a lot of wiggle room and you could talk.
"But if we refuse Roy to go for one more game against Toronto and if that jeopardizes in any way him playing in the World Cup or making it to the World Cup or something like that, I would be a very sad and angry person.
"We are monitoring the situation. We are allowed to have both of them through the Toronto game.
"We're going to figure out what's best for us and the team but also the players."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball