Give Workspace Viewers Access to Export to Excel

Hi 

My users are viewers of workspaces as I don;t want them to update / change / add to the workspaces. 

They would like to 'Export to Excel'.  Is it possible to give them that access?

At the moment 'Analyse in Excel' is greyed out. 

(I've checked 'File' settings of my reports and 'Allow Excel' is selected).

Just exporting content of visuals will do - doesn't have to be underlying data.

Thanks

PBIM