The winger was very impressive in League One.
He played 12 games and scored two goals, including one against Newcastle United in the FA Cup.
The 21-year-old was also impressive for the West Ham Under-23s in the first half of the season.
His time at Oxford has come to an end as League One is cancelled for the rest of this season due to coronavirus.
"I really enjoyed my time at Oxford United, it was a great experience." Holland said, per the club website.