Reinforcements have arrived.

Head coach Gregor Townsend today named a revised Scotland Six Nations squad  ahead of this Saturday’s Round 4 Test against Ireland at the Aviva Stadium in Dublin.

The squad, which increases in size from 36 to 40 for the forthcoming rounds, welcomes 10 players into the group at the expense of six, with five of the seven new faces fit-to-play for the first time in the current campaign.

Toulouse lock Richie Gray (calf), Glasgow Warriors hooker Fraser Brown (head), prop Zander Fagerson (foot), centre Alex Dunbar (thigh) and Edinburgh Rugby prop Darryl Marfo (back) have recovered from their respective injuries to be deemed eligible for selection for the first time.

The new additions are completed by Edinburgh Rugby back-row John Hardie and scrumhalf George Horn. The final three amendments see Sale Sharks and Glasgow Warriors wings Byron McGuigan (hamstring) and Lee Jones (head) return from their respective injuries to re-join the group, while Edinburgh Rugby back-row Magnus Bradbury is reselected.