The Monaghan teen, 19, was attacked in Omagh and later died of a head injury.
The accused, Mark Donnelly, from Greencastle Road in the Co Tyrone town, is one of five people charged with affray.
He appeared at Dungannon Magistrates' Court on Wednesday.
Dressed in blue jeans and a brown fleece the accused spoke only to confirm his name and to say he understood the charge.
A detective constable said he could connect Donnelly to the charge.
There was no objection to bail but Judge Gerry Trainor gave stringent conditions.
Donnelly was electronically tagged and subject to a carefew. He is not to enter Omagh town or leave Northern Ireland as part of his work as a floorer for the family business.
He is also banned from drinking alcohol and entering licensed premises.
The accused is due back in court on 19 March.