Leigh Griffiths: 'Top-class Celtic striker getting back to his best'

There was an error

This content isn't available any more.

"Top-class" Celtic striker Leigh Griffiths is getting back to his best form after hitting a hat-trick against St Mirren, says BBC Sportscene pundit Steven Thompson.

MATCH REPORT: Celtic 5-0 St Mirren

Available to UK users only.