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