There were other offers that Johann turned down, such as Leiden, a second offer from Utrecht and a generous offer for him to return to Groningen in 1717.
May mga iba pang nag-aalok na Johann nabuksan down, tulad ng Leiden, ang pangalawang alok mula sa Utrecht at nag-aalok ng isang malaki para sa kanya upang bumalik sa Groningen sa 1717.