This verse refers to Philippians 2:19. Paul hopes to send Timothy soon. Now it depends on how things are with Paul. From this short message it is not clear for what Paul is waiting. It may have to do with the situation of Paul’s imprisonment. It is not clear yet how this will develop. We do get the impression that Paul has a certain freedom to make his own decisions.
23 I hope therefore to send him just as soon as I see how it will go with me,