Karrueche Tran -- More Signs She's Dating Soccer Star Memphis Depay

Seems Karrueche Tran's summer lovin' is spillin' over into the fall ... because she's getting very close with Manchester United star Memphis Depay ... and even went to his game Wednesday night.

Tran was first spotted with Depay in Miami back in June -- but recently it seems things have started to heat up ... with the two hitting nightclubs together and even shopping in Manchester.

Now, with Tran attending the Man U game ... pointed out by our friends at BSO ... it's just another clue she's more than just friends with the guy who signed a $40 million contract back in May.

BTW, Man U won the game 2-1 ... and even though Memphis didn't score on the pitch, seems he might do pretty well after the game.