That's why the Tottenham loanee isn't getting regular game time at the Stadium of Light and while Billy Jones has been picked ahead of him recently.
But that raises the question of why Sunderland signed the Tottenham right-back in the first place... has Allardyce openly undermined the club's transfer policy?
Allardyce is quoted as saying by the Independent: "Billy has got a lot of experience and we’ve got DeAndre, who has got very little experience at this level.
"He [Yedlin] has got a lot of qualities but without that experience, it’s a massive ask to perform at the consistent level that you need to at this stage of the season, under the pressure that we’re all under."
Allardyce's reasoning here seems fair. It's a catch-22 situation that applies in all walks of life - how can you get more experience if people won't give you any... because you're too inexperienced?
But Big Sam has kept sides up before and he clearly has an eye for who and what is needed in situations like this.
In his eyes, Yedlin isn't right for the relegation battle. And, if he isn't willing to regularly play the Spurs loanee, that's highlighting an obvious flaw in Sunderland's transfer policy.
Naturally, Sunderland struggled to attract names due to their poor position in the Premier League back in August. But why sign an inexperienced defender on loan from Tottenham, only for him to later be deemed unready by the new manager?