Radja Nainggolan is not happy with facing Liverpool in the Champions League. (AFP/Getty Images)

Roma midfielder Radja Nainggolan is unhappy that his side are facing Liverpool in the Champions League semi-final.

The Serie A club travel to Anfield for the first leg of their semi-final tie on Tuesday.

But Nainggolan admits he would rather Roma have been paired with either Real Madrid or Bayern Munich.

‘I wasn’t happy with the draw, because in my view Liverpool were the toughest team out of the three,’ Nainggolan told HLN.

‘It’s not that they have more quality than Real Madrid or Bayern, but they put a lot of hard work in and have nothing to lose.

Nainggolan claims Liverpool are ‘warriors’. (EPA)

‘Real and Bayern might’ve underestimated Roma, but Liverpool are warriors, a bit like us.’

Nainggolan is also relishing the prospect of facing his former Roma teammate Mohamed Salah.

‘I spoke to Salah and he couldn’t believe we’d beaten Barcelona either! He was joking on Instagram that we’ll never hear the end of Kostas Manolas saying he scored the winning goal,’ said the Belgium international.

‘It’ll be nice to see Momo again, we had a good rapport.

Nainggolan says he had a ‘good rapport’ with Mohamed Salah (AFP/Getty Images)

‘He’s a good guy, sweet and respectful, as well as being an excellent player.

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‘I am not surprised by his success at Liverpool, as he always had the quality.

‘The only difference now is perhaps he’s got more opportunities and also learned to keep a cool head in front of goal. I’m a fan of his.’