Newcastle could turn to Liam Gibson against West Bromwich Albion this weekend.
The Magpies lost 3-0 away at Everton on Wednesday evening, and need to start picking up points quickly if they are to avoid relegation this term.
McClaren's men sit two points adrift of safety, and have won just one of their last eight Premier League games, with Newcastle clearly looking to spend their way out of trouble.
January signings Henri Saivet, Jonjo Shelvey, Andros Townsend and Seydou Doumbia should give Newcastle a boost, but they notably ignored their defensive problems - and that could now come back to bite McClaren.
Chancel Mbemba went off injured against Everton, and his replacement Jamaal Lascelles was sent off late on, leaving McClaren with few options at centre back, whilst left backs Massadio Haidara and Paul Dummett are also injured.
It's reported by The Sun that McClaren is now looking to turn to teenager Liam Gibson in a desperate bid to resolve his defensive woes ahead of this weekend's game against West Brom.
Gibson, 18, has come up through the ranks at St. James' Park, and apparently models his game on Barcelona's Jordi Alba, according to Newcastle's official website - and would be an option at left back if McClaren doesn't choose to play winger Rolando Aarons there.
The teenager has a clear lack of experience, as his only first-team football came with Gateshead, but given that Kevin Mbabu is also out injured, Gibson may be called upon to play in arguably Newcastle's biggest game of the season, if reports are to be believed.
Should Newcastle start Aarons or Gibson at left back on Saturday?