A release clause is a specific term in a contract that allows someone to be released from their obligations or restrictions before the agreed-upon time upon meeting certain conditions. Full definition
The striker has a # 42 Million release clause in his deal which he signed in 2014 and runs out in 2019, and there is no talk of a new deal at present. (justarsenal.com)
It's not the end of the world... but now we can't use the 20 million release clause which is unfortunate. (justarsenal.com)
This would amount to an even higher release clause. (lawyer-monthly.com)