Closer to home, Manchester United have also been linked with a possible move for the 27-year-old.
Chelsea paid Leipzig £52million for Nkunku, who has so far delivered 15 goals in 41 appearances for the Blues, mostly as a substitute.
Chelsea want to keep forward Christopher Nkunku despite growing interest from abroad.
Reports in Spain recently claimed that Barcelona were on Nkunku’s long list of overseas admirers.
After declaring that Nkunku was ‘absolutely not’ up for sale, Maresca added: ‘The problem with Christo, not the problem but the same issue we have mentioned many times; if you play with Cole Palmer, Joao Felix, Christo, Jadon Sancho or Noni Madueke – who is defending? Their skill is not defending. The last game, we tried with Joao and Cole together.
