Former Manchester United defender Mikael Silvestre is concerned that the Premier League giants would struggle to convince Michael Olise to leave Crystal Palace for Old Trafford. As Chelsea found out the hard way during the summer of 2023, Crystal Palace’s number seven is not going to simply jump at any opportunity to swap South London for a new challenge at one of England’s big boys. Olise signed a new four-year deal with Palace just days after Chelsea triggered the then-£35 million release clause in his Eagles contract in August. And Silvestre wonders if the former Reading starlet would make …