Lewandowski's replacement Sadio Mane had performed quite well at the start of the season, but was injured and after the international break Mane experienced a decline in appearance which made it very difficult for Bayern Munich to score goals, and maybe Bayern Munich regretted selling his player to Barca, especially at the club he is still enough productive.
He performed well at early of past season but his performance changed to worse before he got an injury and spent months to recover from it. He get difficulties to adapt to Bayern Munich team before that injury. He returned in late of season but caused a drama with Leroy Sane in Champions League defeats.
Bayern Munich are reportedly eyeing several reliable strikers at the moment, but from Harry Kane and Victor Osimhen, Harry Kane's transfer price seems more reasonable than Napoli's player Osimhen, because the club charges a very high price for its strikers, if I'm not mistaken, twice the market price for Tottenham strikers Harry Kane
Kane does not have many choices to leave Tottenham as I guess he does not want to play against Tottenham. Rumor still says Kane wants to join Manchester United but we don't know will he feel happy when playing against Tottenham?
If he want to move to a club beyond Premier League, La Liga looks his best destination but Real Madrid tends to wait for Mbappe. So Bundesliga is his last choice because Bayern Munich are strong there, at least he will win Bundesliga with them. Bayern Munich are always one of best candidates for Champions League trophy too.
Osimhen is superior in terms of age to Harry Kane and Bayern Munich will have a chance to make a profit if Osimhen plays brilliantly so the selling price will still be high a few years later, but so far what has been reported is not official news so it remains to be seen who will Bayern Munich managed to bring in, and Bayern Munich really need a striker, although they do not rule out the possibility that next season their current strikers will appear different and better than last season, because everything can change, including the Bayern Munich strikers.
Osimhen is different than Kane. He is younger and has a longer career ahead. He left Ligue 1 to join Serie A so I don't think he will leave Serie A and move to Bundesliga. He will aim at two bigger leagues, Premier League and La Liga. He has many choices as many big clubs in those leagues put their eyes on Osimhen.