Does Sarri have good connections to be able to pick out players that no one else noticed? If there is no ban then Chelsea will be trying to muscle in on an already overcrowded top table. Real, Barça, PSG, Bayern, Utd and Juve are all looking to overhaul massively ageing squads. Chelsea will have enough money with the Hazard sale but players will be seriously overpriced.
He'll probably have better knowledge of the Italian market than the rest of the prem but there are no real hidden gems nowadays. All the top sides have a ton of scouts and every half-decent player has an agent who is trying to get transfers for their clients.