Brad Guzan says he would love the chance of being the USA's number one goalkeeper.
29-year old Guzan, who has played 23 times for the US, is likely to start in Panama City and is hoping to use the opportunity to edge past Howard in Klinsmann's rankings ahead of the 2014 World Cup.
"I come in every camp and try to look at myself as a No. 1 and a guy that can be counted on," Guzan said.
"With goalkeepers, you never know. Something can happen in a warm-up or whatever. You come into camp hoping to play, expecting to play to a certain extent.
"If your name isn't called, then obviously you're disappointed. You just have to keep fighting because that's what it's about.
"I can play at the highest level. This is now a chance to show to the coaches and show to the teammates that I can be counted on and I'm not here to come into camp and have 10, 12 days off and have a bit of a vacation. It's serious. It's work. It's coming in to hopefully prove my case."
Klinsmann added: "Brad Guzan has earned the opportunity to start against Panama. He has been outstanding for Aston Villa all year, and he has been huge in the games he has played for us in World Cup qualifying. As I said before, we have one of the best situations in the world when it comes to our goalkeepers."
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