The Russian striker only joined Reading on a four-year contract last summer after enjoying an impressive half-season at Fulham.
Reports have suggested that, if Reading fail to preserve their top-flight status, then Pogrebnyak will seek a move back to Zenit in the summer.
However, when asked what he could say about the rumours, Pogrebnyak told Sport-Express: "Nothing. The season is not over, so it would be too soon to talk about the future.
"Now, I focus on helping Reading to get important points in the Premier League."
Pogrebnyak has scored five goals in 22 league appearances for Reading, who are second bottom in the table and seven points from safety with just eight games remaining.
The 29-year-old previously spent just over two years with Zenit before leaving for Bundesliga club Stuttgart in 2009.