Robert Lewandowski has played very well for Barcelona which is big surprise to many people. He has scored many goals and is best scorer in Spanish league for last three years. It would be good idea for Barcelona to give him new contract because he is still playing at very high level. Lewandowski works very hard and loves game which is inspiring to see. He definitely deserves new contract if he wants to stay with Barcelona.
Robert Lewandowski already had a contract extension, Barca used it. But they are looking for a new striker to have an alternate to him. Because he is of a certain age. Okay, there are strikers who are still top scorers and play at a high level after the age of 35, but aging is a part of life and you can't be as physically strong as you used to be, even if you want to. You are more prone to injury and it takes longer to recover. Barca can't afford to have their main striker so old when they are competing at the highest level. Lewa can be a backup and an alternative in the future. Every team wants a superstar striker like Lewa in their squad. It was obvious that Barca wouldn't let him go.
Many speculate that Lewandowski will leave Barcelona at the end of this season considering his age is no longer young. Of course Lewandowski who is already 35 years old, even I see his biodata he is already 36 years old, of course he is effective again to be on the front line of Barcelona in the next few years, but considering he is still productive in scoring goals this season, extending his contract might be a solution for Barcelona, especially since they are in their best form both in La Liga and in the UCL league. Lewandowski's services are still very much needed, but Barcelona must also find another replacement for the striker position. Because as you said, old age is very susceptible to injury, especially Barcelona's very busy schedule.
Although Lewandowski has reached an agreement with Barcelona to stay with Barcelona until the end of the season or one more season. But Barcelona must move quickly to find a replacement, Barcelona is currently eyeing Newcastle United striker, Alexander Isak, and Viktor Gyokeres from Sporting CP is a more affordable option with a cheaper transfer value.
Since being coached by Hansi Flick, Barcelona has successfully transformed a number of Barcelona players who had performed poorly into better ones, such as Frenkie De Jong who has returned to being Barcelona's mainstay despite almost being sold. Eric Garcia, Ferran Torres, and Jules Kounde have also been increasingly impressive in every match and Raphinha has suddenly become Barcelona's goal machine since Flick arrived.