Lewis has worked with many of Spurs' players with the England squad.
Lewis said: "I was an unused substitute but I still had to face Jermain (Defoe) in training and that was a test in itself.
"Peter Crouch was there as well and he's a top bloke as well as a top player. I first met him when he was ]on loan at Norwich. I also know Aaron Lennon and Tom Huddlestone from my time with the Under-21 side.
"But it won't matter who is in the Tottenham side.
"They are flying right now and will be expected to walk all over us.
"For that very reason, though, I think all the pressure is on them.
"Although we're bottom of the Championship, we can go out and play with a bit of freedom and express ourselves."