What you will see in the notification window at the top of the right hand corner of the dashboard is the detail about the offer that you have received back. 

The counter offer can also be seen by clicking on the yellow target button within the 7 day Agenda. 

This is an example of the dashboard where you can see the counter offer on the shift swap. 

By clicking on the view button in the notification window a pop up screen will open indicating the offer that has been received in return for the shift swap.

This can also be seen by clicking on the target icon next to the day, indicated by a yellow marker.