Coppell believes a quota of English players in each team's matchday squad will encourage clubs to develop homegrown talent and protect the league's identity.
"I still maintain that we play in the 'English' Premier League, it's nothing to do with any kind of racism," he said.
"We are in the English Premier League yet all the majority of the teams at the top end of the Premier League have very few English players.
"We have to protect our own development. I think it's a necessity that over the course of the next couple of years, even if it starts with one English player per 16, we protect our identity by having a limited number of English players within our own environment.
"There are certain clubs that would go against that but as someone who wants the English national team to do well it's something that's got to happen."