Had decent successes with my Leverkusen bargain-bin hoarding shenanigans. A fair few of note (discounting the regens and the sales of the club's original players):
Fabio Daprela for €1M after got himself transfer-listed by Juventus. Gave him a contract as a backup player on a €55K p/m wage. Somehow transformed into a beastly CWB on my Leverkusen team. Immediately sold to Wolfsburg the next season for €13M with future clauses. Turned up **** over there, haha.
Marquinhos for €4.1M from PSG. Three solid seasons later, turned up as a world-class centre-back. Got an offer of €65M from City, Madrid and freaking PSG. Turned down the offer because imma keep him as my star complete defender (DC, DM, DR, Sweeper). Thankfully enough he didn't seem to mind either with our cheap as all **** wage structure lol.
Allan Nyom from Udinese. Tried to buy him for €4M, got rejected. I enquired again about one week later, and somehow they've decided that they're willing to sell him for free. Okay then, you got yourself a fair deal good sirs. He's been bullying the opposition's right flank ever since then. Feelsgoodman.
Vitinho snapped up for free (this guy is notorious really) after the first season. Signed on a one year contract of €60K p/m, then on a two year contract of €135K p/m the year after. Sold to Madrid on his second season for €28M.
Both Eduardo Salvio (€4M) and Nicolas Gaitan (€210K lolwut) from Benfica (somehow JJ hates proper wingers on my saves, and preferring to splash the cash on a truckload of mediocre Brazilian MCs).
So the transfer summary for my club season by season is like this:
1st season: €3.5M loss,
2nd season: €3.45M profit,
3rd season:€50.5M profit,
4th season: €75.5M profit,
first half of 5th season: €48M profit.
Not too shabby i guess.