Jose Mourinho is back at Real Madrid 13 years after leaving, but can the 63-year-old recapture the success of his first spell? BBC Sport speaks to those who know him best.

Spanish football expert Eduardo Alvarez believes president Florentino Perez took inspiration from Carlo Ancelotti's successful second stint. Former Real president Ramon Calderon warned Mourinho must change his behaviour: "He had many problems... always blaming others." He needs to gain respect by persuasion, not imposition.

Portuguese journalist Duarte Monteiro says Mourinho hasn't changed, but the world has. "Young players today... there's not as much openness to embrace him." Former Chelsea defender Robert Huth recalled Mourinho's brutal honesty but also his ability to galvanise a squad. He believes Jude Bellingham will thrive under Mourinho, but has concerns about Kylian Mbappe and Vinicius Jr.

Managing such stars will be a defining challenge. Mourinho needs to convince elite players to believe in him completely, as they did at Porto, Chelsea and Inter Milan. His greatest strength was uniting a squad behind a common cause, but adapting is key now.