Why is jack so eager to have algernon leave the manor and return to the city?

Jack is eager for Algernon to leave the manor and return to the city because he wants to keep his romantic plans with Gwendolen uninterrupted. Algernon's presence complicates Jack's efforts to propose to Gwendolen, as he is concerned that Algernon's charm and wit might distract or sway her affections. Additionally, Jack's desire to maintain the facade of his alter ego, "Ernest," is jeopardized by Algernon's curiOSity and meddling. Thus, getting rid of Algernon is crucial for Jack to pursue his goals without interference.