Red Bull's chief engineer dismissed the idea that the team has taken any deliberate steps to make their cars less comfortable for Sergio Perez, branding such a move as "foolish".
The Mexican has enjoyed a strong season so far, third in the drivers' championship and scoring the points his team needs to see off their Ferrari rivals. But in recent weeks there has been a feeling that all is not well with the 32-year-old, who trails Max Verstappen by 57 points.
Perez was talked about as a title contender after winning the Monaco Grand Prix, but since then things haven't gone his way. He has finished second in two of last four races, but failed to finish the other two due to a mechanical failure and damage sustained from a collision.
