The Scottish midfielder has been out in Italy since the start of last year after signing for Bari.
Henderson lasted eight months there before being forced to move on to Hellas due to Bari’s financial issues.Embed from Getty Images
And last season was a dream for him as Hellas achieved promotion to Serie A via the playoffs.
Now Henderson will be focusing on impressing in Serie A and breaking into the Scotland squad under Clarke.
In a chat with Sky Sports News, he gave his thoughts on his time on Italy so far, what the future holds – and spoke a little about his brother Ewan making the breakthrough at Celtic:
Scotland are next in action in September when they face Russia and Belgium at Hampden at the beginning of September.