June 13th: Should a player be able to deny a team from drafting him?

-Brendan McKay was selected by the Twins with the No. 1 overall pick in the MLB Draft but he denied the offer and was then selected No. 4 overall to the Tampa Bay Rays

-We’ve seen this before in the NFL (John Elway not wanting to go to Baltimore; Eli Manning not wanting to go to San Diego)…should that ever be acceptable?