The 30-year-old striker, who spent three seasons with Celtic, previously played for FC Twente and PSV Eindhoven.
The away-goals win over Sporting set up a last 16 tie with PSV Eindhoven.
Lafferty had been carried off with suspected knee ligament damage during Rangers' game against PSV Eindhoven.
Atletico Madrid and PSV Eindhoven, a club Gerets has also coached, complete Group D.
However, PSV did go close to extending their lead on a couple of occasions.
Seedorf's call-up came after Sneijder was injured in Ajax's 1-0 defeat by PSV Eindhoven on Sunday.
BBC: SPORT | Football | Internationals | Van Persie out of Holland squad
"The most important thing is, he never panics, " said PSV football manager Stan Valckx.
The on-loan Arsenal player suffered suspected medial ligament damage in Thursday's Europa League defeat by PSV.
BBC: Rangers' Kyle Bartley misses cup final with knee injury
Ajax were eight points behind joint leaders PSV Eindhoven and AZ Alkmaar in mid-February before their unstoppable run.
The Belgian's European Cup triumph as a player came in 1988 when PSV beat Benfica 6-5 on penalties.
And PSV were furious when Stam alleged in his autobiography that he had been tapped up by Ferguson.
Smith's side now face Serie A club Fiorentina, who followed up their win over Everton with victory over PSV.
But the 63-year-old Reds boss moved to cool speculation that it would be PSV Eindhoven forward Ola Toivenen he would be signing.
Smith's men produced a dogged display to stifle PSV at the Philips Stadion.
Berg fired wide after the break and PSV keeper Andreas Isaksson saved well from Kyle Bartley's header for the visitors.
Marcus Berg had an effort saved by Neil Alexander and Marcelo headed wide as PSV pressed for a first-half opener.
Meanwhile, Rangers say the knee injury to Kyle Lafferty, carried off against PSV, is not as bad as first feared.
BBC: Rangers' Kyle Bartley misses cup final with knee injury
The win leaves the Reds sitting comfortably at the top of Group C alongside PSV who also have seven points.
In 2010, while at Ajax in Amsterdam, he was banned for seven matches for biting PSV Eindhoven midfielder Otman Bakkal's shoulder.
After leaving the England job in 1990, Robson then managed a string of top European clubs including PSV Eindhoven and Barcelona.
It was only after the 2002 World Cup that he joined PSV Eindhoven and proceeded to join Manchester United in 2005.
When the deal is done, Jambalaya will take PSV guests on day sails in the summer and Beauty in the winter.
Suarez was handed a seven-match ban by Dutch football authorities in 2010 for biting PSV Eindhoven's Otman Bakal while playing for Ajax.
There was little to admire in PSV's work, either, as the Dutch side could do no more than match Liverpool's lethargic tempo.
First, Gilberto made amends for his mistake against PSV in midweek by finding Green's left-hand corner after Lennon dummied Pascal Chimbonda's pass.
BBC: SPORT | Football | Premier League | Tottenham 4-0 West Ham
United have already bought Jaap Stam and Ruud van Nistelrooy from PSV.
The 20-year-old Dutch left-back, who joined Chelsea from PSV Eindhoven in 2007, spent much of last season on loan at Coventry and Newcastle.
As have foreign coaches such as ex-Bayern Munich boss Ottmar Hitzfeld, Australia and PSV coach Guus Hiddink and Portugal boss Luiz Felipe Scolari.
Liverpool now face a fight with Atletico Madrid to finish top of group D, with an away game at PSV Eindhoven to come.
Meanwhile, in Group K , Otman Bakkal's first-half header was enough for PSV Eindhoven to claim their opening win at home to CFR Cluj.
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