McLaren chief Zak Brown has revealed that the team were approached on three different occasions with regards to junior driver Lando Norris.
Motorsport Week first revealed that Toro Rosso and Red Bull had made an approach about securing Norris' services as they looked to replace an underperforming Brendon Hartley.
However McLaren rebuffed the approach as it would have required severing ties with the Formula 2 championship leader.
But Brown has revealed that there were other approaches from different teams as Norris continues to prove his talent in the sport's feeder series.
"We've been approached by more than one team," Brown told Motorsport. "We've had three approaches, of varying degrees. Some included this year, but we want him to focus on F2, and keep him at McLaren.
"If we felt it was good for his career, and good for McLaren, then we'd consider it on a case by case basis."
Brown made it clear McLaren wouldn't simply let go of the 18-year-old after investing heavily in his career to date.
"All of the approaches meant he would have gone away, and we're not interested in that conversation. That's non-negotiable.
"We're not going to train him up for someone else, but I don't think anyone else has any interest in training him up for us."
