Although it is 33 years since he left Home Park, he is still revered by many Argyle fans as one of the club's all-time greats. And he admits that this chance of returning to the club is a fantastic opportunity.
"In football, there is not much sentiment," Mariner told the New England Revolution club website.
"But, if sentiment is involved in this scenario, then they gave me my very first chance as a player so I grabbed it with both hands.
"Plymouth Argyle are in my blood. Obviously the teams you're associated with are the ones you look for every week, and when they came knocking on my door asking me to be employed there, I was delighted."
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