Since Lewandowski's arrival at Camp Nou, Depay has rarely had minutes to play, so it's only natural that he hasn't contributed much to Barcelona which has made his market value also drop, but as an option to replace Lewandowski he's still quite good. But on the other hand, there is still no suitable replacement for Lewandowski's role, but the play-off round is still a long time away. We still don't know what will happen, let's just wait.
Robert Lewandowski have impressive performance with Barcelona and success become top scorer awhile with 13 goals in La Liga, I don't think Depay have chance to replace position from Lewandowski after biggest contribution until 14 matches. Still can't guarantee with Depay get regular position in Europe League trough Barcelona have important match in play off round against Manchester United, I think although success qualify to next round seems difficult for Depay get position in starting eleven.
Barcelona still have life and die match against Manchester United in play off round, due World Cup over and several player need recovery I don't think which one have favorite can win in this play off round match, but Manchester United have show with good performance after winning from Burnley at EFL Cup last night.