Lions head-coach Warren Gatland will reveal his starting 15 for the second Test with South Africa later this morning.
Should Wyn Jones remain sidelined with a shoulder issue, Mako Vunipola is expected to get the nod at loosehead prop.
Out-half Dan Biggar is also a doubt while Connacht's Bundee Aki could be in line to replace Elliot Daly in midfield.
The World champion Springboks will also reveal their team today.