No. A deal is a deal, and Pompey need to pay him back, no matter how tough their situation is.
Pompey should be allowed to purchase players without getting Chelsea's approval.
Portsmouth has many debts to other teams for past transfers (Arsenal, Rennes, Chelsea) and according to Premiere League rules, the debts must be paid before Pompey can purchase new players. Unless the owed teams give up, or postpone the debt. Which is what Pompey is trying to do, and has already secured Aresnal's and Rennes' agreements. Now it needs Chelsea.
Should Lyon take points off their second-placed opponents, Marseille will be able to take their first Ligue 1 title since 1992 with victory against Rennes later in the evening.
He will need time to settle, he might turn into an expensive flop too!
Sunderland have broken their transfer record to bring in Ghana striker Asamoah Gyan from Rennes for 13 million pounds. Fraizer Campbell will be out with a long term injury so Gyan will team up with last season's top goalscorer for the club, Darren Bent.
