The DDCA Ombudsman said that Manjot Kalra was free to play till further orders and instructed DDCA's Apex Council to conduct an investigation in the matter as per rules.
Manjot Kalra, whose age as per the BCCI records is 20 years 351 days, last week played for Delhi U-23 against Bengal and scored 80.
Delhi Capitals are conducting trials in Kolkata to pick replacements. Former India player Manoj Tiwary was seen at the nets on Thursday.
Manjot Kalra, like many other young cricketers, sees a role model in Virat Kohli.
India won the title for the record fourth time after beating Australia in the final.
India (220/2) reached the target with eight wickets in hand and 11.1 overs to spare as they completely outclassed the Australians.
With a fourth crown, India surpassed Australia in the race for most U-19 World Cup titles.
Captain Prithvi Shaw joined the likes of Mohammad Kaif (2002), Virat Kohli (2008) and Unmukt Chand (2012) in leading the India to the U-19 World Cup title.
Rahul Dravid's boys rode on a disciplined bowling effort to restrict Australia to a modest total of 216 runs.