A Greek government spokesman has announced a cabinet reshuffle.
Among ten changes, Finance Minister Tsakalotos remains, and George Katrougalos has been named as the new Labour Minister.
Tsipras was forced to reign in SYRIZA members after a number revolted and voted against recent reforms demanded by Greece's creditors.
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Meanwhile, the European Commission has confirmed a €7bn euro bridging loan for Greece has been approved.
It means Athens can pay its bills while it awaits the unlocking of a third bailout.