So sorry for the delay!!! It's been a busy spring/summer.
https://docs.google.com/spreadsheets/d/1rhopfyVCpEjNl6MQaaFWEYwpTCHSEIL6RQ7EWxSDi2s/edit?usp=sharingTo use the spreadsheet - find the player that you want to extend on BOTH the 2021-2022 and 2020-2021 sheets and select the higher of the two values - that's your extension value. Number of years is limited by the same rules as always:
Contract Limits for ExtensionsSalary - Min & Max Years
$6.5m+ - 5 years (the overall limit)
$5 to $6.4m - 4 or 5 years
$3.5 to $4.9m - 3 or 4 years
$2 to $3.4m - 2 or 3 years
$0 to $1.9m - 1 or 2 years