Rangers appoint Derek McInnes as their new manager, with multiple reports stating the move follows his success at Hearts. Sky Sports reports Rangers secure McInnes on a three-year deal and frames the appointment as a replacement for Mark Röhl. Other coverage from Sky News and related reports says McInnes agrees a deal in principle to become Rangers’ next boss, aligning with the same replacement context. Collectively, the outlets indicate the appointment is confirmed after discussions, moving from an agreement in principle to a finalized role for McInnes. The reports also emphasize that McInnes’ appointment comes after what they describe as a significant or momentous season managing Hearts. No source in the provided material gives details beyond the contract length, the replacement of Röhl, and the link to his prior season with Hearts.