Scotland have released their side to face Howley’s men on Saturday.
Barclay has taken over the captaincy role this weekend as 5 changes were made to the side from the last round.
Is this the side that could defeat a strong Wales team?
Starting XV: Stuart Hogg, Tim Visser, Huw Jones, Alex Dunbar, Tommy Seymour, Finn Russell, Alistair Price; Gordon Reid, Fraser Brown, Zander Fagerson, Richie Gray, Jonny Gray, John Barclay, John Hardie, Ryan Wilson.
Replacements: Allan Dell, Ross Ford, Simon Berghan, Tim Swinson, Hamish Watson, Henry Pyrgos, Duncan Weir, Mark Bennett.