Ojo, 24, is headed to Millwall for his eighth loan spell. The winger's last appearance for Liverpool dates back to the 2016/17 season. The Reds were reportedly ready to grant him a permanent move but did not receive a suitable offer.
Longstaff, 20, joins Queen's Park in the third tier of the Scottish football pyramid, the first professional club of Andrew Robertson. The midfielder has so far one senior appearance for the Reds which came in a League Cup fixture against Aston Villa in 2019.