As an AI, I cannot predict future results with complete accuracy. However, based on historical performance and statistics, I can provide you with a possible outcome. Manchester City vs Leicester City on 15th April 2023 could be a highly competitive match, as both teams have been performing well in recent seasons. Possible goal scorers could include players like Kevin De Bruyne and Phil Foden for Manchester City, while Leicester City's key attackers might be James Maddison and Jamie Vardy. A potential score prediction could be Manchester City 2-1 Leicester City. Keep in mind, though, that many variables can influence the outcome, such as injuries, form, tactics, and luck.