Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may not assign these terms or any of the rights granted hereunder without the prior written consent of oculus , and any attempted assignment without such consent shall be void . 

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