Formula 1 teams are set to reject an offer from FIA president Jean Todt to bring back limited in-season testing from next year.
Todt revealed at last weekend's Turkish Grand Prix that he wants to bring an end to F1's in-season testing ban - and plans to discuss the matter with teams ahead of the European Grand Prix.
However, although Todt believes it makes sense for a return of some testing, teams are not convinced it will be a good move - as they fear it will simply lead to an escalation in costs.
When asked by AUTOSPORT for his feelings about the idea, Red Bull Racing boss Christian Horner said: "I think that the balance that we have is right. Maybe we could do a bit more running on a Friday, or have a few more sets of tyres, which would encourage teams to run with more young drivers.
"The problem with testing is that as soon as you reintroduce it, you reintroduce test teams and the cost will escalate.
"One of the biggest cost savings we have seen is the reduction in testing, so I think the balance we have with the pre-season and the young driver test at the end of the year is right - and fiscally beneficial not just to the big teams but to the small teams as well."