Saturday 22 April
Hibernian v Aberdeen
Winger Chris Humphrey is back in contention for the first time since suffering an injury in Hibernian's replay win over Hearts two months ago. Defenders Liam Fontaine (ankle) and Paul Hanlon (pelvis) remain on the sidelines.
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Aberdeen's prospects for the game have taken a turn for the better after Niall McGinn was passed fit for action. The Dons' key man missed last weekend's win over St Johnstone with a groin injury. The Pittodrie side have no other injury concerns.
Top Scorers: Jason Cummings (Hibernian) 21; Adam Rooney (Aberdeen) 18
Match Odds: H 5-2 A 10-11 D 12-5
Referee: John Beaton (Scotland)
Sunday 23 April
Celtic skipper Scott Brown is free to play after the club challenged his Ross County red card. The midfielder faces a two-match ban after lunging in on Staggies forward Liam Boyce but will now report for duty ahead of Thursday's appeal hearing. Dedryck Boyata and Mikael Lustig are also in the squad.
Rangers manager Pedro Caixinha hopes veteran defender Clint Hill will rejoin his squad in time for the clash after three matches out with a calf injury. Michael O'Halloran is also available after serving a club suspension for missing an Under-20s fixture.
Top Scorers: Moussa Dembele (Celtic) 32; Martyn Waghorn (Rangers) 16
Match Odds: H 2-5 A 13-2 D 15-4
Referee: William Collum (Scotland)