Veteran TV sports commentator Howard Cosell said Tuesday that he hopes to return to television early next year with a weekly current-affairs talk show, "Howard Cosell: Speaking of Everything." Targeted for a late Sunday night time-slot, the show could begin airing in January, if enough stations opt to carry it. In making the announcement, Cosell was joined by executives of Ohlmeyer Communications and Casablanca IV, the companies committed to producing and syndicating the show. The TV series would be patterned after Cosell's radio show of the same name aired via the ABC Radio Network on more than 350 stations. Cosell's radio show, which he said he plans to continue, features the outspoken commentator and one or more guests each week in a free-wheeling discussion. Recent guests have included Jihan Sadat, Joan Baez and Marvin Hamlisch.