To any diligent follower of the NBA, Kawhi Leonard is a legitimate top-10 player in the league (top-5, depending on who you ask.) As such, any team would be ecstatic to have him wear their jersey on a nightly basis, besides probably the San Antonio Spurs. With Leonard being a free agent following this season, there is a threat that he could leave the Raptors in favor of another team, most notably the Los Angeles Clippers and New York Knicks. Leonard's departure would surely be a significant loss to the Raptors, since it is difficult to replace someone of his caliber. Fortunately for "The 6", their replacement for Leonard is already on the roster: Pascal Siakam.
At this point in their careers, nobody would confuse Siakam with being on the same level as Leonard. However, the gap is closer than most people outside of Toronto would believe. Per 36 minutes, here's the comparison of the two players' stats this season:
Kawhi Leonard: 28.2 PPG; 7.8 RPG; 3.5 APG; 49.4% FG; 36.9% 3PT; 86.2% FT
Pascal Siakam: 19.1 PPG; 7.7 RPG; 3.5 APG; 54.6% FG; 35.8% 3PT; 78.2% FT