(Photo by Pedro Salado/Getty Images) | Getty ImagesBarcelona sporting director Deco has said its time to make decisions regarding finding a replacement for Robert Lewandowski.The 37-year-old has confirmed he will leave at the end of the season when his contract expires and Deco says finding a successor to the Poland star is a tough task.Today is a somewhat sad day because Roberts departure is now official, he said, per Mundo Deportivo. Its almost impossible to replaceRobert; hes been the best striker of recent years, and everything hes done for Barainthese years is very difficult to replicate, but thats football. Ferran arrived as a winger and has become a true number 9, but now its time to make decisions and start strengthening the team.Barcelona are reportedly interested in Julian Alvarez and Joao Pedro but Deco didnt want to talk about specific names.Its not a question of profile. Were not ruling anyone out, nor are we signing anyone, he added. These are internal matters. What we have to guarantee is that were going to work as we do every year. Weve lost a very important player likeRobert, and of course were going to try to strengthen the team.Who would you like to see replace Lewandowski at Barca? Share your thoughts in the comments below.