Bell was outstanding again for the Light Blues in their 2-0 win over SPFL League One rivals Ayr United at Somerset Park on Saturday.
There is stiff competition to get into the national squad with Allan McGregor, David Marshall and Matt Gilks all playing at a high level in England.
And it would be a surprise if the former Kilmarnock man was included in the Scotland squad for their friendly with Poland on Wednesday.
But Gers right-back Foster feels Scotland boss Gordon Strachan will soon be keeping close tabs on his team- mate if he continues performing so well.
He said: "Cammy had a couple of great saves for us against Ayr on Saturday.
"One of them was a shot heading straight for the top corner.
"We were thankful he was so sharp. But we see him pull off saves like that every day in training. He is a top-class goalkeeper. I am lucky enough to have worked with Allan McGregor, who is a top goalie.
"But Cammy is a great goalie as well. There are similarities between them.
"Their reflexes are the same. He is a great shot-stopper. You have to put the ball right in the corner to beat him. He makes big saves for us at important times.
"If Cammy keeps producing that sort of form I am sure the Scotland manager will eventually look at him."
Rangers left-back Lee Wallace has forced his way back into the Scotland squad this season and has featured twice despite playing in League One.
Foster reckons Bell can do the same thing.
He said: "Lee is an inspirational to us. We know that even if you are not playing in the top division the Scotland manager will have a look at you if you are, like Lee, playing well."