The Manchester United playmaker has recorded eight double-digit returns this term, more than any other player in FPL.
Two of those hauls have come in his last three outings at Old Trafford, with the Portuguese totalling 33 points across those matches.
Paul Pogba (£7.7m) and Marcus Rashford (£9.6m) provide further options against the Blades.
Pogba has scored twice in the last two Gameweeks, returning 23 points, while Rashford produced a goal and an assist in the Red Devils’ FA Cup victory over Liverpool on Sunday.
However, it remains to be seen if Rashford will be available for Gameweek 20 after he was forced off with a knee problem in the 3-2 victory.
Elsewhere, Leicester City playmaker James Maddison (£7.2m) is among the standout armband alternatives.
The midfielder visits Everton having scored in four successive matches in all competitions.
That has made him the most-bought player ahead of Tuesday’s 16:30 GMT deadline, earning a massive 380,000+ new owners.
Like Maddison, both Ilkay Gundogan (£5.5m) and Michail Antonio (£6.3m) scored in each of their Double Gameweek 19 appearances.
Finally, Tottenham Hotspur’s home match against Liverpool features three of the four top-scoring players in FPL.
Harry Kane (£11.2m) has scored in three successive Gameweeks on his way to the top of the FPL player standings.
And Son Heung-min (£9.7m) has produced double-figure returns in three of his last five home outings.
Meanwhile, Mohamed Salah (£12.5m) has returned to form after a run of five successive blanks.
The Egyptian scored both his side’s goals in their weekend FA Cup loss at Old Trafford.
Salah also has a strong record against Spurs, netting five goals in seven Premier League meetings.
Part 1: GW20 Kings to watch: Join the masses going for Gundogan
Part 2: GW20 Differentials: Shaw an all-round prospect
Part 4: Who to captain in GW20? What the experts say
Part 5: Scout Selection: Antonio can extend goal run
Part 6: GW20 final call: Zaha fit to take advantage of fixtures
Remember, the Gameweek 20 deadline is at 16:30 GMT on Tuesday 26 January.