Barca face competition for Wijnaldum's signature
Wijnaldum has previously said he would be "devastated" to leave Anfield in the summer, but Camp Nou is appearing to be his next destination.
"It would be really difficult [to leave] because if that happens, you will leave a team who you really love, who you have shared a lot of years together with and where you feel really comfortable," he said, per the Liverpool Echo.
"It will be difficult but on the other side, you don't know the situation and why you have to leave, so it all depends on the situation.
"But I will be devastated that I am not going to play for this team anymore for sure."
City eyeing up both Messi and Haaland
As Sergio Aguero will be leaving the Etihad this summer, Pep Guardiola is looking for a replacement and there would probably be no better signings in world football on current form than the young Norwegian and Argentine legend.
While Messi is currently available on a free transfer in the summer, his wages are such that City will have to pay him an enormous amount of money to bring him to Manchester.
Haaland, meanwhile, is on a contract until 2024 with Borussia Dortmund so City would be likely to have to pay well over £100million for his services. However, Dortmund have stressed previously that they are not willing to sell the striker in the summer.
Pogba heading back to Juventus again?
Pogba has already spent four years with the Serie A club after leaving the Red Devils as a youngster, so another move to Juve would see his career see-saw between the clubs once again.