Cook, who was made stand-in captain following a serious knee injury sustained by Simon Francis late last year, missed out on joining Callum Wilson in Gareth Southgate's England squad this week but Howe is confident the defender can earn a call-up in time.
"He is performing really well for the team and has really played his part in that defensive steel," Howe said.
"I see him every day so I know the quality of his performances. I know how good he can be.
"As I said after the Manchester United game, Gareth (Southgate) will be watching and he will be watching closely every Premier League game and every English player performing well in the Premier League.
"Steve can have no worries on that side. He has just got to produce the performances to get picked."
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