Ok, so the contract is a continuing 5 year rolling contract.
"For each contract year completed under this agreement, the January 31st, 2018 date shall be extended for one calendar year."
But, if it hasn't been agreed upon/renegotiated along the way, there is no financial agreement after.
"this level of financial commitment shall not extend beyond January 31st, 2018, unless stipulated in a subsequent written amendment between both parties."
So they'd have to be discussing him either leaving or staying, and his salary if he does?