Eight players were nominated for the inaugural TAG Heuer Young Player of the Season award.
The prize, which is new in 2019/20, goes to the best-performing player who was aged 23 or younger at the start of the campaign.
Fans had the chance to cast their vote by visiting the TAG Heuer website before 18:00 BST on Monday 10 August.
The supporters' vote was combined with the choices from a panel of experts to decide the winner.
Finishing second to Kevin De Bruyne for the Playmaker award with 13 assists, while also scoring four goals, the 21-year-old delivered outstanding attacking contributions from right-back as he played an instrumental role in Liverpool's title triumph.
Aston Villa's captain, who turned 24 in 2019/20, led by example, scoring eight goals and providing six assists. His strike at West Ham United on the final day ultimately secured the 1-1 draw that kept Villa in the Premier League.
Manchester United's 18-year-old striker enjoyed a breakthrough campaign, scoring 10 Premier League goals despite only making 12 starts from his 31 appearances. His ability to finish powerfully with either foot marked him out as a special talent.
One of Sheffield United's star performers, 23-year-old goalkeeper Henderson kept 13 clean sheets during his season-long loan from Man Utd and made 97 saves as the promoted Blades finished ninth.
The Frenchman, 24, moved up front and excelled as Man Utd's central striker, scoring 17 goals in 32 matches as he surpassed 50 Premier League career goals in 2019/20. He also provided six assists.
Chelsea's 21-year-old Academy graduate started 32 of his 37 matches in his first Premier League season, contributing seven goals and five assists. His free-kick against Wolverhampton Wanderers on the final day paved the way for a 2-0 win which secured a top-four finish.
The 21-year-old American was a big hit in his first Premier League campaign, scoring nine goals and supplying four assists as his pace and trickery brought a new dimension to the Chelsea attack.
Rashford, 22, scored 17 Premier League goals, his best tally in a season, and set up another seven as Man Utd went 14 matches unbeaten to finish third.
TAG Heuer Young Player nominee: Trent Alexander-Arnold
TAG Heuer Young Player nominee: Jack Grealish
TAG Heuer Young Player nominee: Mason Greenwood
TAG Heuer Young Player nominee: Dean Henderson
TAG Heuer Young Player nominee: Anthony Martial
TAG Heuer Young Player nominee: Mason Mount
TAG Heuer Young Player nominee: Christian Pulisic
TAG Heuer Young Player nominee: Marcus Rashford