Henderson should take note of Milner.
Similar players. Henderson should retire after Euro 2020. Concentrate on club would prolong his career.
He has played in 2 WC's already too.
I'm not sure he'd look at it like that. Maybe if they won the Euros (unlikely) it'd be a chance to bow out on a high but he'll still want another shot at the World Cup. With the likes of Sancho, Sterling, Kane, Trent, Foden, Mount, Hudson-Odoi etc England have a good crop emerging.
Gerrard should have fucked England off a lot earlier which could have extended his club career but England were going nowhere and never had a chance under Hodgson.