Cagliari director Stefano Capozucca admits there's several hurdles to overcome before signing Radja Nainggolan outright.

The midfielder remains tied to Inter Milan.

“There's a long way to go, there are big problems to resolve," Cagliari director Capozucca told Cagliarinews24.com.

“Inter's difficulties are already well known, while at the same time we have our issues to deal with too. It won't be easy to resolve the situation."

“The truth is that in this moment there are no concrete offers, but relations between us and Inter are good.

“We are in constant contact and we can start any kind of negotiations with Inter."