The EU is unlikely to accept Scotland as member states won't want to encourage their own secessionist regions. I would understand the need to discourage secess

The EU is unlikely to accept Scotland as member states won't want to encourage their own secessionist regions. I would understand the need to discourage secession of regions who would then leave the EU, however the EU has an incentive to accept Scotland because its secession would be the first step towards restoring EU membership.