Saracens full-back Alex Goode says he must focus on his own game in order to secure the number 15 shirt for England in their autumn internationals.
The 25-year-old faces competition from Mike Brown of Harlequins and Northampton's Ben Foden.
Goode told BBC London: "They are very good players, both of them.
"If I start worrying about them I will take my eyes off my own game. You can't worry about external factors that you have no control of."
Foden has won 32 caps for the national side and was established as England's first-choice full-back before being ruled out of last year's autumn Tests with an ankle injury.
Goode and Brown have shared responsibilities since then, with the Quins man also featuring on the wing for his country.
Foden, 28, returned to the international fold for the tour of Argentina this summer and with both he and Brown impressing for their respective club sides this season, Goode - who missed the trip to South America with a shoulder injury - is wary that England coach Stuart Lancaster has a dilemma on his hands.
"I can't worry about what they are doing," Goode, who has won 11 caps for England, added.
"They are going to play well week in, week out.
"I have to play well for Saracens. I owe them for helping me get back from injury so quickly and it is about putting in big performances for them.
"It is a dream to play for England and to play at Twickenham is something you always want to do.
"It would be a great thing and a privilege to be part of the autumn series."
Saracens face Toulouse at Wembley Stadium on Friday night in their second Heineken Cup pool match.
Sarries remain unbeaten in all competitions this season but Goode says they are "under no illusions" that the French side will provide tough opposition.
"You always want to pit yourself against the best players in the world and they are a class act with some great individuals," he said.
"We are not hiding from that fact but we feel we have some great players in our side and we have started the season really well.
"We are in a good place as a team and feel our collective strength is something other sides don't have. Hopefully that will help us through."