Argentina v Germany 21.00
Germany centre-back Mats Hummels missed the second half against Brazil as a precaution because of tendonitis, but is expected to be available.
The Germans could name the same side which thrashed the hosts 7-1.
Argentina's Angel Di Maria has returned to light training after a thigh injury, but is unlikely to be fit to start.
Striker Sergio Aguero is fully recovered from a similar problem and could replace either Ezequiel Lavezzi or Gonzalo Higuain.
Argentina fielded Higuain, Aguero and Lionel Messi as part of a front three earlier on in the tournament.
However, they may be reluctant to pick such an attacking line-up against the in-form Germans.
Left-back Marcos Rojo failed to complete a training session on Friday because of a sore ankle but the problem is not thought to be serious.