Toronto Blue Jays third baseman Josh Donaldson weighed in on the MLB Draft Monday, pointing out the impact that a player’s home country can have on his earnings. Players residing in the United States, Canada and Puerto Rico are draft-eligible, while international prospects sign as free agents.

International amateurs are also subject to spending restrictions, so players without professional experience have essentially had their earnings capped around $3 million under the current system.

However, experienced international players such as Rusney Castillo, Yoan Moncada and Jose Abreu have regularly signed deals worth tens of millions. The Chicago Cubs, who have spent big on the likes of Jorge Soler, selected Donaldson with the 48th overall pick in the 2007 draft.

Jeff Hoffman, Toronto’s first-round pick in 2014, agreed with Donaldson.

It’s not the first time that American players have spoken out. After the Red Sox signed Moncada, Tampa Bay Rays left-hander Drew Smyly expressed frustration on Twitter.

“It’s not right that a Cuban 19yr old gets paid 30m and the best 19yr old in the entire USA gets prob 1/6th of that,” Smyly wrote at the time. “Everyone should have to go through same process.”

The 2015 MLB draft begins Monday and concludes Wednesday.