Sussex have signed 19-year-old wicket-keeper batsman Callum Jackson on a one-year deal.
Jackson, who was born in Eastbourne and has developed through the club's youth system, made his first team debut in all forms of the game in 2013, including a first-class debut against the Australian touring team in July. He will spend much of the off-season playing Grade cricket in Australia.
Sussex's Professional Cricket Manager Mark Robinson said, "Callum showed at the back end of the season that he was comfortable in the first-team environment.
"He has a lot of hard work in front of him but with a lot of determination there is nothing to stop him having a long and successful career."
"It is always a sad time when we release any player," Robinson said. "But both are still young and we hope a change of environment will help them fulfil their potential.
"Andy and Joe have been model professionals and we would like to thank them both for their hard work and commitment. We wish them both all the best for the future."
George Dobell is a senior correspondent at ESPNcricinfo