The rumors are true.
Perhaps the most OP FIFA 18 Ultimate Team Throwback Thursday Squad Building Challenges are here. “The Black Spider”, Lev Yashin (and his famous hat!), Netherlands star Marco Van Basten, German juggernaut Lothar Matthäus, and the one, the only, Ronaldinho, just one day after announcing his retirement, all have untradeable yielding SBCs, temporarily available loan editions, and are packable from now until the end of FUT 18.
The early reviews seem positive: Yashin and Van Basten are both relatively affordable, as far as untradeable item yielding SBCs go. Ronaldinho and Matthäus, perhaps appropriately, won’t come easily.