Manchester United are willing to include Robin van Persie in a bid for AS Roma midfielder Radja Nainggolan. The Belgium international is a top target for United boss Louis van Gaal as he seeks to add steel to his midfield next season.

Nainggolan is in co-ownership with Cagliari and Roma are expected to buy him outright this summer.

Leggo says United are keen for Roma to sell him onto them and are willing to offer Van Persie in exchange.

The United striker has a year to run on his current deal and could be made available by manager Louis van Gaal.