He is among The Scout's five Ones to watch ahead of Thursday's 11:30 GMT deadline.
The Brazilian has been provided with four big chances in Spurs' six matches under Mourinho, more than any team-mate.
Yet he is owned by only 5.1 per cent of managers for the visit of Brighton.
The Seagulls have struggled defensively on the road in 2019/20. They have kept one clean sheet in their last eight away trips and also conceded in each of their previous six.
Spurs' favourable schedule further raises the appeal of Lucas as a short-term pick. According to the Fixture Difficulty Ratings (FDR), each of their next three matches against Brighton, Norwich City and Southampton score only two.
Pukki will be looking to extend his fine away form for the Canaries at Aston Villa.
The underlying numbers highlight Pukki's recent attacking threat. His 14 shots and 11 shots in the box both rank among the top five forwards in the last four Gameweeks.
The Finland international can take further advantage of a Villa side who have conceded a league-leading 11 goals during that period.
Roy Hodgson's men have conceded only two goals in the last five Gameweeks.
And Van Aanholt was one of the standout creators after returning from injury at Newcastle United.
The US international was on the bench against Spurs after Frank Lampard opted for a 3-4-2-1 formation.
Pulisic had started each of the previous eight Gameweeks and could return to Chelsea's starting line-up at home to Southampton.
Although he has not scored since Gameweek 12, Pulisic remains a threat.
His 13 shots in the box in his last four matches are second only to the 16 of Liverpool's Mohamed Salah (£12.2m).
The Saints, meanwhile, visit Stamford Bridge with a poor defensive record, having conceded in each of their last 13 matches.
The Everton full-back has been a far more reliable source of points at home this season.
At Goodison Park, Digne's 20 key passes are more than any team-mate.
And all three of his assists plus three of Digne's four clean sheets have come on Merseyside.
Remember to select your Gameweek 19 team before the deadline of 11:30 GMT on Thursday 26 December.