Even the gamblers believe Real Sociedad has better chance to win than Manchester United. Manchester United is having one of its worst season in 21st century and was battling to stay away form relegation zone. Even though they are now almost safe from relegation. But Real Sociedad is also not at their best form and the game would be competitive.
Manchester United last year surprisingly won the FA Cup to reach the Europa League and I hope they still held some surprises.
Given Manchester United's poor performance it's no surprise that bookmakers favour Real Sociedad, especially with the first leg being played in Spain. Real sociedad are a strong side and playing at home gives them an added advantage. If United wants to progress, the defending champions have to be more disciplined and consistent especially in away fixtures where Real Sociedad will look to capitalize.