Your merchandise will go down, if you get better players that are foreigners. The merchandise formula is xenophobe, so any increase in "foreign" salaries, will result in a loss in merchandise money.
I dismantled my roster at the end of last season, got rid of the expensive foreigners and my merchandise went from ~40k to 60-70k instanteniously.
A roster of world class foreign players will most likely bring less merchandise than a salary floor domestic team.
Größter Knecht aller Zeiten aka His Excellency aka President for Life aka Field Marshal Al Hadji aka Lord of All the Beasts of the Earth and Fishes of the Seas aka aka Conqueror of the Buzzerbeater Empire in Europe in General and Austria in Particular