Jacques Rudolph hopes to keep Notts bowler Andy Carter for the remaining two games of his planned loan spell at Glamorgan, despite the likely return of Michael Hogan.
Australian Hogan hopes to face Derbyshire on 3 May, with Carter due to stay until 13 May.
Carter has claimed four wickets in the first innings of his two matches so far against Leicestershire and Surrey.
"The way he's been bowling you'd have to try to keep him" said Rudolph.
"He's done really well on a flat wicket (against Surrey), and bowled really well at Leicester. He's got a big heart and just wants to bowl."
Rudolph still has to discuss the issue with head coach Toby Radford and chief executive Hugh Morris.
"You always want to be in a position where you have quite a few players to pick from," he told BBC Wales Sport.
Carter himself is keen to stay on at the Swalec Stadium and play alongside Hogan, who has been sidelined by a hamstring injury.
"I'm contracted to stay on until after the Kent game, so I've got two more games," said Carter.
"I've come away to get plenty of overs under my belt, I feel I'm bowling well but it's up to Notts and Glamorgan.
"I want to play as much first-team cricket as I can and contribute to winning games."
Meanwhile young seamer Ruaidhri Smith is out for around 10 days after tearing a hamstring in the second eleven fixture against Yorkshire.