From Wikipedia on Crosby:
"On 26 March 2013, he reunited with Adkins as he became his assistant at
Reading.
[50] Crosby said the pair had tried to continue the work done by popular former manager
Brian McDermott, however Reading were relegated from the Premier League at the end of the
2012–13 season."
I'd say he succeeded.
I wonder if we should look at someone like Crosby or Mark Bonner as an assistant manager?
Crosby will most likely go to join Adkins at Tranmere, he's been his assistant at 5 previous clubs.