Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may not assign or delegate any rights or obligations under the terms of service or privacy policy without supercell 's prior written consent , and any unauthorized assignment and delegation by you is ineffective . 

```
. OPTIONS: ['Unilateral change' 'None' 'Arbitration' 'Jurisdiction'
 'Contract by using' 'Limitation of liability' 'Content removal'
 'Choice of law' 'Unilateral termination'].