RB Leipzig chief Markus Krosche says they won't rush into signing Angelino permanently.
The Spanish fullback is impressing on-loan from Manchester City and can sign outright for €30m.
"Of course there is a time limit. But it is not that we have to decide in the next four weeks," said Krosche.
"In principle, contracts are made to fulfill. But we are now waiting for the next few weeks and see how it all develops. The fact is: As a player and character, Angelino suits us perfectly."