Antonio Conte has typically opted to deploy a three-at-the-back system during his managerial career.
The Italian has enjoyed great levels of success with both 3-4-3 and 3-5-2 formations during spells with Juventus, Chelsea and Inter Milan, winning at least one league title with each club.
However, considering the Lillywhites acquired both Rodrigo Bentancur and Dejan Kulusevski during the January transfer window, the veteran coach may think about utilising a back-four set-up during the remainder of the campaign.