Investment: BuLi Rare Golds
Player: BuLi Rare Golds (not just Stark)
Reasoning: For the past couple weeks, rare golds have went up substantially due to the League Upgrade SBCs, first for the PL and then for La Liga. It is likely that we will be getting Bundesliga TOTS next, for which an upgrade would come out next Monday, May 18th. I recommend doing a club stock of BuLi rare golds from the list on FUTBIN.
Note that you could also prepare yourselves with Serie A and Ligue 1 rare golds for their respective upgrades as well.
Target BUY: XBOX 1k PS4 1k PC 1k
Target SELL: Sell after their respective league upgrade SBC is released.