The deal to take Nunn to Stamford Bridge is expected to be rubberstamped at the end of the season, but Alex could allow him to make the move early if contracts are signed.
"If the club and manager want to continue - and I think that will be good for the club - they should sort them [the problems] out because the competition out there is so incredible".
Courtois, 25, endured a hard night at the Camp Nou a fortnight ago, conceding twice to Lionel Messi as the Argentinian ace struck both shots through his legs, helping Barcelona to a 3-0 win.
'I've got one more year at Chelsea and I'm feeling good there.
Spanish judge says will try 13 Catalan separatist…
Five other Catalan politicians, including Mr Puigdemont, fled to Brussels following the failed secession attempt in late October. He was released on bail after accepting central government control over the region but still faces the prospect of a trial.
Chelsea next play Tottenham on Sunday in a match crucial to their bid to qualify for next season's Champions League.
Meanwhile, Hazard remains tight-lipped over his future, amid speculation that he could depart Stamford Bridge in the summer for the likes of Barcelona.
"I'm happy with Chelsea", he added.
Mohammad Shami injured in road accident, given stitches
He will also be free to play in the Indian Premier League for his franchise the Delhi Daredevils, starting 7 April. Shami is at the centre of controversy following a series of accusations made by his wife Hasin Jahan .
"When I hear so-called experts talking, I do not think they know anything about goalkeeping - for example, [Louis] Van Gaal should not talk about goalkeepers", he said. "But that is emphasised less and I can hardly change that perception".
The Premier League champions are about to yield the title to Manchester City but are in the FA Cup semi-finals and competing to finish in the top four and qualify for the Champions League next season.
Next Chelsea manager odds: Who could replace Antonio Conte?
Dutch police detain 25 England supporters for violence
Authorities have confirmed that nearly one hundred fans were arrested and held overnight for offences including public disorder. The FA said any of its members identified as causing trouble would be banned from the organisation.