The Hoops striker has been missing since injuring his elbow playing for Greece earlier in the month.
Striker Lassad will miss out with a calf injury.
SPL leaders Motherwell have a couple of unnamed injury doubts for the game.
But Shaun Hutchinson will play after having four stitches inserted in a head would during Wednesday's Scottish Communities Cup defeat by Rangers.
Manager Stuart McCall, who is still missing defender Steven Saunders (knee), is set to make changes following the Ibrox disappointment.
Aberdeen v Hibernian
Aberdeen wingers Ryan Fraser and Jonny Hayes will both have morning fitness tests ahead of the Scottish Premier League clash with Hibernian.
Fraser missed the midweek victory over Dunfermline with a knock and Hayes picked up an injury at East End Park.
Rory Fallon underwent an operation on a stomach muscle problem on Friday and Gary Naysmith (hamstring) remains out but Rob Milsom is available after knee problems.
Striker Leigh Griffiths is set to return for Hibernian.
Griffiths missed the 2-2 draw against Inverness with an ankle injury but resumed full training on Thursday.
Former Carlisle midfielder Tom Taiwo is pushing for involvement in the squad after working on his fitness.
Hearts v Kilmarnock
Hearts defender Andy Webster is in line to return for the visit of Kilmarnock.
Webster has missed two games with a back injury but resumed training in midweek and will be in the squad if there is no reaction.
Midfielder Denis Prychynenko is again struggling with an ankle injury.
Kilmarnock manager Kenny Shiels expects to name a similar squad to last week.
Borja Perez is set to remain on the sidelines with an abductor muscle strain that kept him out of the win against St Mirren.
Dundee v St Johnstone
Dundee wait on Toshney Dundee hope on-loan Celtic defender Lewis Toshney can overcome an ankle injury in time to face St Johnstone.
Kevin McBride and Jamie McCluskey made their return from injury for the Under-20s this week but the latter fell awkwardly and was taken off and neither will feature. Stephen O'Donnell (hamstring) and Davide Grassi (knee), Carl Finnigan (knee) and Mark Stewart (knee) remain out.
Rowan Vine is suspended for St Johnstone.
The Saints striker was given a three-match ban for picking up his second red card of the season against Ross County last week.
Callum Davidson and Jamie Adams are both still out with back problems.
Inverness v Dundee United
Andre Blackman could return for Inverness in their match against Dundee United.
The on-loan Celtic defender missed the midweek cup win over Inverness with an ankle injury.
Owain Tudur Jones serves the final match of his three-game ban while Simon King (ankle), Chris Hogg (knee), Nick Ross (shoulder) and Shane Sutherland (leg) remain on the sidelines.
Dundee United defender Brian McLean has recovered from a knock he suffered against Queen of the South.
Recent signing Gregory Vignal will also be in the squad but is not expected to start.
Winger Gary Mackay-Steven is still sidelined following knee surgery.
St Mirren v Ross County
St Mirren have doubts over Kenny McLean and Graham Carey ahead of the Clydesdale Bank Premier League clash against Ross County.
Carey has a minor calf problem while McLean has been carrying a knock for several weeks and will be assessed.
Darren McGregor underwent surgery on his ruptured cruciate ligament on Thursday while fellow long-term absentee Grant Adam has stepped up his recovery from a fractured leg.
Mark Corcoran (groin) and Alex Cooper (ankle) are still missing for Ross County.
Goalkeeper Joe Malin has recovered from injury but now finds himself third choice and is available for loan along with striker Kurtis Byrne.
Midfielder Mark Fotheringham is pushing for a debut two weeks after signing for the club.
Longer-term casualties Paul Heffernan (collarbone), Jeroen Tesselaar (hamstring), Cammy Bell (wrist) and Garry Hay (knee) are still out of action.