It is great, but I would go slowly with my expectation. I hope he's successful but I don't think that it's a given, sorry.
If there's any a time to make a good impression it's Southampton's next match. Arsenal away will be extremely difficult. We'll see if Adkins will want to throw Yoshida into the wolves right away. The good thing is that they've already played the two best teams in the league (Man U and Man City) so it can only get easier for them until the midseason.
Arsenal?!? holy shit. The good news is that Southampton will surely have better matches near the end of the season... they just played city, united, now arsenal. good lord.
And playing a new player who just came back from international break and has only participated in 1 training session is a better idea?