A Mercedes star has been warned that his position at the team will be under significant threat should Max Verstappen become available on the driver market.
Verstappen has endured a challenging campaign at Red Bull, and has been some way off his best in his pursuit to clinch a fourth consecutive world title.
He continues to lead this year's standings with six races remaining, but has failed to win on any of his last eight outings, and is under severe pressure from McLaren star Lando Norris.
And if he decides to eye up Mercedes as his next destination, then that could spell bad news for George Russell, according to former Haas boss Guenther Steiner.
Speaking on the Red Flags Podcast, the Italian discussed the team's signing of Antonelli, and admitted that Russell must prove he has what it takes to stay at the team.
Asked if Russell might be screwed if Verstappen targets a Mercedes switch, Steiner replied: “Yes, could be screwed, not might be screwed, could be screwed.
“But I think he’s aware of this and the only way to prove his worth is by having the results against Kimi Antonelli, the guy who crashed in FP1 [at the Italian Grand Prix].
“Yeah, but it’s also how you beat a rookie. If you dominate him, like at some stage, you know, as much as Toto [Wolff] loves Kimi, if he doesn’t deliver, I think the love is over pretty quick.
“Yeah, it is conditional on your performance. I love you as much as you perform.”