"He is very much in our radar and we are closely following his performances for Worcestershire in England," Haroon told PTI today.
The national selectors ignored Ajmal for the tour of Sri Lanka and the home one-day series against Zimbabwe after he failed to impress with his remodeled bowling action on the tour to Bangladesh earlier this year.
But the veteran off-spinner has shown signs of improvement while representing the English county in all three formats of the game and returned figures of 8/100 in Worcestershire's innings defeat of Hampshire last week.
"Ajmal is an asset to Pakistan cricket and we are in touch with him and we are following his performances with interest. We see a role for him in the coming days for the national team," Haroon said.
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"You just can't discount a great bowler like him. But we realised after Bangladesh that he needed more time to get comfortable with his new bowling action," the former Test batsman said.
He said if Ajmal made a comeback and could bowl in tandem with leg spinner Yasir Shah, it would be a big boost to the national team.
"From what we are hearing it is great for Ajmal because he has been keen to prove to everyone he can still play international cricket even after remodeling his action and still find new ways of getting people out," Haroon said.
The chief selector said the decision to send Ajmal to Bangladesh was taken because the off-spinner himself was keen to test himself at the top level.