iPhone 6 passcode and possible iCloud removal?


Someone found a iPhone 6 and nobody ever called the number for 2 weeks to claim it and now they decided to keep it.
Right now its stuck on passcode screen

Since that can’t be bypassed if they do restore to new device in iTunes they will be most likely presented with this screen?

When they typed IMEI number on iCloud activation lock check website they get this

What’s their best option to get this phone working again?