I’d have hoped Frank would have a pretty strong knowledge of the squad before taking the job. However, I can see the lack of activity being due to him being new and wanting to evaluate the players before doing anything.I might be clutching at straws, but, if we're comparing with the other big clubs in this window, it could be our change of head coach and other aspects of football administration. All seems to be for the better, but things will be bedding in.
I guess Frank and his coaching team are working with Lange to assess our squad and the up-and-coming young'uns before proceeding. Decisions must be made about Bissouma and Bentancur in particular, given their contract situation (while Son is rightly given slack), and Frank will presumably be central to this.
Then there's the small group of young players who might go out on loan, stay with the U21s, or maybe go into the U21 list of the PL squad, or the B List of the CL squad. Has Frank finished his assessment yet? It's a guess, but I'd assume he needs to see all players closer to full match fitness in the East Asian tour games.
There's also the bad luck of MGW, with £60m committed, and then not. Suddenly, with more money available, Frank has to work with Lange to look at the market anew.
The other big clubs, who have not changed manager, will have had a transfer strategy worked out some way in advance.
OK, end of straw clutchery...
Which neatly brings us back to the fact we need to stop sacking managers. And stop giving players the good old clean slate.