It was a tactical change which worked, and I applaud Jan for the reaction.
I didn't see a bad performance nor can I see the cliff edge drop in form some are implying. He is a bit rusty, but the 3 at the back formation and the constant changes never help.
When he came off the balance changed, as you'd expect when adding a midfielder, but Southampton were still cutting through us.
Thought that a lot of players made mistakes early that resulted in dangerous chances or goals.
10th minute, Tanganga chases Long and Aurier doesn't track Redmond back.
19th minute, Ward-Prowse sends a beautiful pass around Sess and Verts but Lloris should have been out of his line instead of tracking back.
1st goal - Hojbjerg passes to Boufal, effectively nullifying the second line - Ndombele is stranded on the touchline , Aurier is being himself and Toby is forced nearly to the edge of the box.
We have 5 players trying to contain 3 attackers, Boufal sprints forward, and this is where Toby and Jan have a rare miscommunication - both going for the block.
Sess should have been a lot closer to Jan and never allowed Redmond to get inside, and his response time to Redmond's sprint was shocking.
Aurier, again out of position for Hugo's save.
We are defending so poorly all across the pitch, we have brain dead players like Aurier who can't and will never learn, so hold on with the pitchforks.
I can guarantee that with Davies and Tang as fullbacks, Jan will again look the CB that he is.