Man United have concerns about negotiating to sign Real Madrd superstar – report
Manchester United have reservations about doing a deal with Real Madrid to re-sign Cristiano Ronaldo, according to reports

Manchester United’s past tension with Real Madrid over transfers could prevent Cristiano Ronaldo from returning to Old Trafford this summer, according to reports.
ESPN is reporting that the Red Devils have a fractious relationship with the Spanish side and it could have a direct effect on their ability to conclude a deal to sign Ronaldo.
The same article states that Manchester United chief Ed Woodward has learned lessons from his past dealings with the Champions League holders.
Ronaldo wants to leave Real Madrid this summer after becoming disillusioned about life in the Spanish capital following accusations of tax fraud which emerged last week.
The Portugal international moved to los Blancos in a then-world record £80m deal from Manchester United in the 2009 transfer window.
The Red Devils finished in sixth place in the Premier League table last season but secured their spot in the Champions League thanks to a 2-0 win against Ajax in the Europa League final.
Manchester United also lifted the EFL Cup in their first season under Jose Mourinho thanks to a 3-2 win against Southampton at Wembley.