The 25-year-old admits his own season has "not been brilliant" in contrast to last year, when he won the Premier League title with Manchester City and participated in Euro 2012.
And although he welcomes the return of West Brom's Foster after a two-year break from international football, Hart is determined to try and keep hold of the goalkeeping jersey.
"That number one spot is one I want to keep and last summer (Euro 2012) was a real high point in my career." Hart said. "It was one of the best footballing things I've done. To play in a tournament like that is a dream."
He added: "It's great to see Ben. He is a consistent performer, someone I get on well with, when we train and to play against,
"It's good to have keepers like that around. There are three top quality keepers here plus Jack Butland and Jon Ruddy, and everywhere you look there is good talent.
"Is Foster good enough to push me? Yes, but I've felt that every time I've come away with England.
"My job when I was first involved was to really push hard. We all train like we are going to play and push each other and it's really good.
"If any one of the three played, then we'd be in a strong position."
- Sports & Recreation