"Hopefully I will be back for the Middlesbrough game," he says. "I'm looking forward to getting back as I don't like missing games.
"But it was one of those where I had to leave it because of a little groin strain. I tried it on the Friday and although I was feeling it a bit I was probably 70% fit, but didn't want to risk being out for a month - so I left it for that weekend."
His absence, together with the unavailability of John Moncur and Michael Carrick, opened the way for Richard Garcia to make his first start in the first team, and Don was impressed.
"I thought he did great. I was watching the game from the stand and cheered us on, and I thought he had a really good game for his debut," he says.
"I said 'just treat it as a normal game, there are no superstars out there' and I think he did really well.
"Whenever Glenn puts him in I think he will do the job quite nicely, and will probably start playing for West Ham regularly.
"We have got good competition in midfield."
Meanwhile, Don welcomes the announcement on Friday that Bertie Vogts has become Scotland manager.
The Scottish captain says the appointment of a German may give the English twice as many reasons to want to see them fail - "it's water off a duck's back" - he smiles, but insists: "I think it is great. We don't know the guy personally but we know of his track record and if he has the same impact as Sven, the country, the fans, and all the players will be really happy."