Last Saturday's squad rotation, however, saw London Irish back Armitage impress many with his counter-attacking performance and defensive display against the Welsh as England triumphed 23-19 at Twickenham. Foden says that the pressure will bring out the best in him when he gets his chance at the Millennium Stadium.
"A lot of good performances came in and particularly from Delon, in my opinion, so I've got to get out on the field and perform well," Foden said.
"It's good to see him back performing well and now that puts the pressure on me. The ball is back in my court and hopefully I'll put in a performance to match or even better that one.
"It should bring out the best in both of us. It can only be good for England to have that kind of competition and I think it is something that is the same throughout the whole squad."
And while there will likely be a raft of changes for the Cardiff return, both sides will be keen to raise the intensity as the World Cup run up continue.
"I think we will see a different temperament in the game," Foden added. "Wales will be determined to win at home and get their pre-World Cup preparations in order. Similarly though if we can go away from home and get the result we need we will take a lot of confidence from that. We want to show we can win on the road as we've got to go to New Zealand and play some of the fiercest teams in the world."