"In three years, I will be 24 and want to keep maturing as a player and keep learning and developing new skills and will have a period to try and work my way into the first team," he said.
"For me, it is about getting as much experience within these three years before you approach what is often regarded as your ‘best years.’
"The more you can play, the more you can learn and develop and extend the number of years you can have at the top of your game."
Cricket steering group chairman Paul Pridgeon said: "Adam is only 21 and will get better and better. He has only played a handful of games, and he will improve and is an exciting prospect for the future.
"At the end of the three years, he will only be 24, and quick bowlers often don’t reach their prime until 26-27.
"He has got his best years in front of him."
Please ensure all fields are completed before submitting your comment!
STAY UP TO DATESign up to our newsletter...SIGN UP
Welcome to www.thecricketer.com - the online home of the world’s oldest cricket magazine. Breaking news, interviews, opinion and cricket goodness from every corner of our beautiful sport, from village green to national arena.