With the recent transfer rumor about Sonny, I decided to do some research on his career stats including UCL and UEL (Also, I couldn't sleep):
2010-2011 (Hamburger SV): 13 games (729 mins) and 3 goals => 243 mins/goal OR 4.33 games/goal
2011-2012 (Hamburger SV): 27 games (1245 mins) and 5 goals => 249 mins/goal OR 5.4 games/goal
2012-2013 (Hamburger SV): 33 games (2703 mins) and 12 goals => 225 mins/goal OR 2.75 games/goal
2013-2014 (Bayer 04 Leverkusen): 39 games (2898 mins) and 10 goals => 290 mins/goal OR 3.9 games/goal
2014-2015 (Bayer 04 Leverkusen): 38 games (2897 mins) and 14 goals => 207 mins/goal OR 2.7 games/goal
2015-2016 (Bayer 04 Leverkusen): 1 game (64 mins) and 0 goal
2015-2016 (Tottenham Hotspur): 35 games (1610 mins) and 7 goals => 230 mins/goal OR 5 games/goal
Sonny has been averaging about 241 mins/goal OR 4 games/goal throughout his career. I wasn't a big fan of Son's performance last season, but it seems like he has been pretty consistent in terms of his output. I would be sad to see him leave since I like the counter-attack threat he offers during games (and his smiles on/off the pitch). If he stays and is given more playing time, I hope he'd prove to us what he is worth!