Unfortunately it's not on the roadmap at the moment. see the response from Connor from Spendee Support Team:
Connor | Spendee Support Team (Spendee)
Jan 16, 15:41 CET
Hello, Geert -
Thanks for reaching out. We do not have any immediate plans to connect to Bunq. However, others have asked for this bank support as well so I noted your request so the team could see it as well.
Please let us know of any other questions.
Spendee Support Team