Neil De Kock will boost Saracens' hopes of qualifying for the Heineken Cup by making his comeback tomorrow in their Guinness Premiership clash at Worcester.

The South African scrum half has been out for almost three months with a broken arm but is fit to return for their crucial run-in. De Kock was initially expected to make his comeback next weekend against Newcastle in the European Challenge Cup quarter-final.

Justin Marshall has been in excellent form for the Men in Black – collecting the man-of-the-match in Sunday’s win over Wasps – since joining at the start of the year. But the former All Black star is cup-tied against the Falcons and Sarries need to give De Kock much-needed game time.

Sarries head coach Richard Graham said: "Neil has been one of our outstanding members of the team over the last three years and it is great to have him back.

"Justin is an absolute professional and has been brilliant but he understands the need for Neil to play. It is great to have two players of their calibre competing for a place in the team."

Andy Farrell is also available to return after an ankle injury – which has kept him out since February – at inside centre. Australian Ben Jacobs is also in line for his second Sarries start, alongside Farrell, after impressing at the weekend.

The Warriors are still not safe from relegation, after two heavy defeats at Bristol and Harlequins this week, and Graham knows they will have focused on beating poor travellers Saracens, who have won at Sixways twice in the last four years, in their quest for survival.

Graham said: "They sent out a young side against Harlequins and were always going to be up against it. They have targeted us as a game they need to win and in two of their last home games they have beaten Wasps and Gloucester."