Sometimes they need throwing in at a higher level, and playing for the actual club who intend to benefit from them long term, the club where they're already familiar going into the season and know their team mates and coaches. You can't loan them out forever, we haven't got forever.... especially with our typical contract lengths
Osula is more than ready physically. We don't need him scoring regularly to be contributing. But it could click fairly quickly on that front. When you have one with his potential you need to back them and commit to them.... even more so here because Jebbison will be gone within a year
Everton with DCL were a decent example. They kept involving him, perservered, began starting him and before too long, boom, it fell into place, and now he's allowed to dress like a girl so that says it all