to be honest, I'm not so sure about Pochettino whether he is able to provide consistency to his players and if I see it looks like Pochettino is looking for a mainstay striker but not sure who he will choose as a mainstay striker.
The mainstay striker spot on Chelsea's football team is currently open due to the addition of new players. As any Chelsea player, Pochettino gives that spot to, will have to prove themselves when the Premier League games get going. There are so many high-caliber players available to Chelsea. Every Chelsea player has a chance to make the starting eleven, and each player's placement will be determined by how they perform in matches against other Premier League clubs, regardless of the first or second eleven.