Chelsea rotates against Leeds: Xabi Alonso faces selection dilemma

In the context of Chelsea just experiencing a dramatic match against Arsenal, Xabi Alonso faces a difficult choice when preparing to welcome Leeds United in the English cup. Analysis shows this is not only a confrontation between two teams with relatively good form, but also a confrontation between Chelsea's rotation strategy and Leeds' best possible lineup. Many internal sources indicate that after being absent from European competitions, Chelsea needs to give minutes to the bench players to maintain form, while Leeds is in an unbeaten run of four matches. This is a highly risky lineup selection situation, where the change of XI could lead to a big surprise. [Expand in detail based on analysis: describe recent matches, form of both teams, head-to-head history, and reasons for Chelsea's squad management. Add analyses on the possibility of rotation, risks for Chelsea, advantages of Leeds, and other factors related to this match to meet the required length.]