Champions League group stage returns on Tuesday evening, and some of Europe's heavy hitters are back in action on the continental stage.However, there has been a seismic shift in the football landscape over the summer.Lionel Messi left Barcelona after over two decades at the Catalan side to join PSG, while Cristiano Ronaldo returned to Manchester United, where he first cut his teeth in the Champions League.United have also strengthened on the wings with the acquisition of Jadon Sancho from Borussia Dortmund.And FiveThirtyEight's supercomputer has predicted how the Red Devils will fare in Europe this season with Ronaldo.United kick off their European campaign on Tuesday evening when they travel to Switzerland to face Young Boys.Ole Gunnar.
Read more on dailystar.co.uk