No player is indispensable and Pakistan will pick Mohammad Amir against England only if the bowler is "up to the mark", bowling coach Waqar Younis has said.
Amir had initially pulled out of the tour but is set to join the Pakistan squad in England following the birth of his second daughter last week.
Waqar suggested Amir, whose Test retirement last year irked the team management, could not take his place for granted in England where Pakistan are scheduled to play three Test matches and as many Twenty20 internationals from August 5.
Jolted by the crafty left-arm quick's shock Test retirement, former captain Waqar oversaw the creation of a bigger pace pool, which includes pace mainstay Shaheen Shah Afridi and the exciting teenager Naseem Shah.
Waqar said the youngsters could learn from Amir's experience.
