The 21-year-old was released by Chelsea in March after he set off a smoke grenade at their training ground.

Mellis spent last week training with Championship side Burnley, before moving to QPR, where he scored for the reserves in Tuesday's 2-1 defeat against West Ham.

"We have had the boy in for a couple of days," said Hughes.

"It is a little bit difficult to really get to see him because we are preparing for really important Premier League games, but we will try and keep him for a couple of weeks.

"We'll see what he has to offer and take it from there."