Imagine Carlos Zambrano grabbing the microphone and singing “Take Me Out to the Ballgame” in front of 40,000 fans. OK, maybe it wouldn’t be that dramatic. And it doesn’t have to be something that would instantly go viral. But would Zambrano ever come back to Wrigley Field or make an appearance at Cubs Convention? “I have no doubt that he would,” agent Barry Praver said Monday in the lobby of the JW Marriott Orlando Grande Lakes. “Carlos speaks very fondly of Chicago and Cubs fans. Always.” As the general manager meetings began here, Praver confirmed that his client is trying to make a comeback, pitching back home in Venezuela and hoping for another shot at reviving his career. In winter ball, Zambrano has given up 15 walks in 19.2 innings, posting a 3.20 ERA through four starts for Navegantes del Magallanes (a team that recently added another classic ex-Cub character in Ted Lilly). Zambrano signed a minor-league deal with the Philadelphia Phillies in 2013 and made seven starts at three different affiliates before injuring his shoulder and getting released last summer.