Gary Lineker believes Cristiano Ronaldo is ‘tough to manage’ with the Portugal star still waiting for his first Euro 2024 goal. And the BBC presenter has also revealed insight from Wayne Rooney on his former Manchester United team-mate, with the pair previously spending five years together at Old Trafford. Ronaldo is one of the best footballers of all time, having flourished throughout his career. His powers seem to be waning at the age of 39, however, with the Al-Nassr star failing to score in the group stages. Ronaldo was frustrated on Wednesday night as Portugal slumped to a shock 2-0 defea…