England’s Mike Brown set to miss big Aviva Six Nations clash

England’s full-back Mike Brown is almost certain to miss Sunday’s pivotal Six Nations clash in Dublin as he has still not recovered from a head injury suffered against Italy.

Brown was knocked out in a collision with Andrea Masi at Twickenham but was expected to have completed the Graduated Return to Play protocol in time to feature at the Aviva Stadium.

But last season’s Six Nations Player of the Tournament reported further symptoms of concussion at the end of last week and is now unable to participate in contact training until Friday.