MÖNCHENGLADBACH, Germany — United States attacking midfielder Gio Reyna is switching Borussias. The 22-year-old Reyna joined Borussia Mönchengladbach from Bundesliga rival Borussia Dortmund on Saturday, signing a deal through June 2028 with his new club.

With the transfer window closing on 1 September, Dortmund have shifted into high gear. Defensive issues and over-reliance on striker Serhou Guirassy are driving their urgency. As Niko Kovac explained ahead of Dortmund’s Bundesliga opener against St. Pauli: “We are glad to have him. I’ve said several times he is a kind of life insurance for us.”