Through 7 games Foster has scored 104 points and has played 71% of the minutes available and is scoring 31.5 points per 100 possessions. Last year he scored 477 while playing 73% of the minutes and scored 31.8 points per 100 possessions. K-State is playing at the same pace as last year, about 65 possessions per game.
I would expect Foster's minutes and points to be slightly higher than last year, but I'll be conservative and say he'll end the season playing 75% of the minutes and scoring 32 points per 100. If he doesn't get hurt and plays every game (with a minimum of 31 regular games, 1 Big 12, 1 postseason), he will score 515 points this season. Added to last year's total, he'll be at 991 points, which will put him on pace to score just over 2000, but not enough to surpass Evans or Pullen if he stays all 4 years. However, its likely his minutes and points per 100 will increase if he stays all 4 years, it will be a matter of staying healthy and runs in the postseason that will decide if he breaks the record, but I'd say he's more than on pace to do so at this point in his career.