Morgan suffered a dislocated left shoulder in the act of scoring his side’s third try in Sunday’s 52-28 defeat by Argentina in Cardiff.
The British and Irish Lions forward is set for a lengthy lay-off. A blow to his club’s United Rugby Championship and Challenge Cup campaigns, whilst he will also miss the autumn Tests against Japan, New Zealand, and South Africa.
That has led to new head coach Steve Tandy calling up Deaves, who was unlucky to miss out on the initial squad after a strong start to the season.
Deaves, 24, is the only specialist open-side after Tandy opted to overlook Leicester flanker Tommy Reffell, who would not have been available for the Springboks finale that is outside World Rugby’s official Test window.
Alex Mann and Aaron Wainwright started in the back row alongside Morgan against the Pumas with debutant Olly Cracknell coming on along with lock or flanker Freddie Thomas.
Uncapped Ospreys number eight Morgan Morse and Scarlets’ Taine Plumtree are also in the squad and provide further options.
Wales head coach Steve Tandy commenting on the inclusion of Deaves said:
“We’re all gutted to lose Jac – he’s a world-class player, as well as a great man off the pitch,” said Tandy.
“This gives an opportunity now for someone else and Harri has been performing strongly for the Ospreys for a consistent period.”
[Lead image: Ospreys Rugby]