Winks was confident his team-mate would get his place back in the first team.
"Dele is a top player - you don't get to the level he has got through luck," said the 24-year-old midfielder.
"You get there through hard work and ability. It might be a dip in confidence, I don't know what the situation is but he is a top pro.
"Everyone in the team will back me in saying that he will get back to his best form and he will do."