I don't like to keep running back to them asking for another player.Harry Redknapp
The duo have been training with Blues and Bassong turned out for the Club's Development Squad side against Watford.
The Blues boss feels he is still one centre-half short in his squad, but admits that he doesn't feel comfortable 'running back' to the Club's owners for another player; having already been backed with 14 signings during the summer.
Redknapp currently has Marc Roberts, Harlee Dean and Michael Morrison as his three preferred centre-halves, with Paul Robinson as back-up and Jonathan Grounds as an alternative in a three, but says that with injuries or suspensions he could quickly find himself short.
"You certainly do need four really, in an ideal world," said Redknapp.
"It's difficult. The owners have given me good backing in bringing these players I have brought in, so I don't like to keep running back to them asking for another player to be honest with you.
"We will have a look at it and see how we go - both Bassong and the other lad are good players, they are certainly players who would play in the Championship no problem.
"Seb has just come in and trained. He is a fantastic professional, a good player and he has just come in here and kept his fitness up at the moment.
"He's a good player, for sure, for someone - for whoever."