Eriq La Salle has told E.R. producer John Wells that he would like to concentrate on his career as a film director and leave the series after next season, TV Guide is reporting on its Web site. "He wants to continue directing, and acting in a series and directing at the same time is tough," Wells told the publication. "Those two ambitions don't go together, and that's been the difficulty in the negotiations." Nevertheless, Wells indicated that he hopes to be able to "work something out" with La Salle. However, the producer indicated that it is unlikely that he'll be able to persuade Anthony Edwards to return. "He has been very definite with me over the last year that he's ready to move on," Wells said.