Bristol Bears have moved to strengthen their options at scrum half by signing former Wasps back Will Porter with immediate effect.
The 23-year-old represented Wasps 58 times, scoring four tries, before being made redundant along with the rest of the club's squad earlier this month when the Coventry side went into administration.
England international number nine Randall had surgery on his injured hamstring two weeks ago and is expected to be sidelined until early in 2023. In his absence, Lam has Andy Uren, Tom Whiteley and Oscar Lennon to call upon, but he remains unconvinced by the latter two options as regular Premiership players for the club.