Red Bull appear to be shopping within their own driver pool as they assess potential replacements for Sergio Perez. They signed the Mexican from Racing Point in 2021 but want to promote their own young talent this time. Liam Lawson is leading the race after returning to RB at the expense of Daniel Ricciardo. Helmut Marko called Yuki Tsunoda a candidate earlier this month but his prospects have suffered since. The Japanese driver was outperformed by the returning Lawson at the United States Grand Prix and crashed out of both qualifying and the race in Mexico. One outlet goes as far as to claim …