It is being reported that Belgian attacking midfielder Franck Moussa is heading for The Valley from Coventry City, having turned down Birmingham City in favour of the Belgian team that plays in London: Moussa
Read more about 'Feed the Mouss and he will score' here (Wikipedia already lists him as a Charlton player and his arrival has now been officially confirmed by the club): Career
It looks as if Piotr Parzyzszek will be going elsewhere having failed to establish himself at The Valley. Network club Sint-Truiden looks likely, although FC Nantes has also been mentioned. I discount Polish sites suggesting a link with Benfica.